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Question 3. Two neon lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. Answer the following questions, give your answer only.

a) How long will it take them to blink simultaneously for the first time after they are turned on? (simultaneously: at the same time)

a = 6 s

Question 3. Two neon lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. Answer the following questions, give your answer only.

b) How many times will they blink simultaneously in the first 70 seconds after they are turned on?

b) 11

5 tháng 4 2019

Đề bài

29 tháng 4 2019

12=3.2^2

30=3.2.5

66=11.2.3

BCNN(12,30,66)=3.2^2.11.5=660(sec)

660sec=11min

8:30min+11min=8:41min

=>The signal lights will flash together at 8:41

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 28 One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 28

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

A. Therefore

B. However

C. So

D. Besides

1
11 tháng 9 2019

Chọn D.

Đáp án D
Trong vế phía trước chỗ trống người viết đang đề cập đến việc nên làm những câu hỏi dễ trước “so pick up the easy points first”, trong vế sau chỗ trống người lại đưa ra thêm một lợi ích khác khi chọn câu hỏi dễ “answering the easier questions first helps build your confidence and gets you in the testing groove”. Như vậy, liên từ đang nối thêm ý bổ sung vào câu trước, vậy liên từ thích hợp là Besides (bên cạnh đó)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 29 One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 29

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

A. only

B. unless

C. as

D. even

1
14 tháng 1 2017

Chọn A.

Đáp án A
Vì phía sau chỗ trống có liên từ If nên không thể dùng liên từ unless (nếu không).
Ta có:
- Only if (Chỉ nếu như)
- As if (như thể)
- Even if (thậm chí)
Dựa vào nghĩa của câu “You can pick up the pace a little, but do this (27) ______ if you can do it comfortably.” (bạn có thể tăng tốc nhịp độ này một chút nhưng chỉ nếu như bạn có thể làm bài một cách thoải mái), ta thấy liên từ phù hợp nhất với chỗ trống sẽ là only if.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 25 One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 25

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

A. factors

B. issue

C. concern

D. information

1
20 tháng 8 2018

Chọn A.

Đáp án A
Vì sau cấu trúc one of + Plural noun ta cần một danh từ đếm được số nhiều nên danh từ thích hợp điền vào chỗ trống là factors (yếu tố)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 26 One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 26

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

A. quickly

B. fast

C. wisely

D. hardly

1
28 tháng 12 2019

Chọn C.

Đáp án C
Xem xét nghĩa các trạng từ ta có quickly = fast (nhanh), wisely (khôn ngoan), hardly (hầu như không). Vì trạng từ cần điền bổ nghĩa cho việc sử dụng thời gian trong bài thi “you use your time ___” nên dựa vào nghĩa, tính từ phù hợp nhất chính là wisely.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 27 One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 27

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

A. short

B. running

C. moving

D. cutting

1
6 tháng 4 2018

Chọn B.

Đáp án B
Do đứng đằng sau chỗ trống có cụm “out of time” nên động từ phù hợp là Running vì ta có cấu trúc nói về việc hết hoặc cạn kiệt cái gì là Run out of + noun.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.One of the most important (3)_______ of a standardized test is time. You'll only be allowed a certain number of minutes for each section, so it is very important that you use your time (4)_______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the (5)_______of questions and the sections...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.

One of the most important (3)_______ of a standardized test is time. You'll only be allowed a certain number of minutes for each section, so it is very important that you use your time (4)_______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the (5)_______of questions and the sections that looks easier than the rest. Then, make a rough time schedule based (6)_______ the amount of time available to you. Mark the halfway point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to (7)_______ fewer mistakes, your mind will become bored and begin to wander. You'll end up with far (8)_______ mistakes if you're not concentrating. If you take too long to answer questions that stump you, you may end up (9)_______ out of time before you finish. So don't stop for difficult questions. Skip them and move on. You can come back to them later (10)_______ you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (11)_______, answering the easier questions first helps build your confidence and gets you in the testing groove. If you're a little ahead, you know you're on track and may even have a little time left to check your work. If you're a little behind, you have several choices. You can pick up the pace a little, but do this only if you can do it (12)_______.

Điền vào ô số 6

A. from 

B. on 

C. in 

D. out

1
5 tháng 10 2017

Đáp án là B.

Based on st: dựa vào cái gì 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.The three phases of the human memory are the sensory memory, the short-term memory, and the long-term memory. This division of the memory into phases is based on the length of time of the memory.Sensory memory is instantaneous memory. It is an image or memory that enters your mind only for a short period of time; it comes and goes in under a second....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The three phases of the human memory are the sensory memory, the short-term memory, and the long-term memory. This division of the memory into phases is based on the length of time of the memory.

Sensory memory is instantaneous memory. It is an image or memory that enters your mind only for a short period of time; it comes and goes in under a second. The memory will not last longer than that unless the information enters the short-term memory.

Information can be held in the short-term memory for about twenty seconds or as long as you are actively using it. If you repeat a fact to yourself, that fact will stay in your short-term memory as long as you keep repeating it. Once you stop repeating it, either it is forgotten or it moves into long term memory.

Long-term memory is the huge memory tank that can hold ideas and images for years and years. Information can be added to your long-term memory when you actively try to put it there through memorization or when an idea or image enters your mind on its own.

Question:It can be inferred from the passage that, if a person remembers a piece of information for two days, this information is probably in________.

A. three phases of memory

B. the long-term memory

C. the sensory memory

D. the short-term memory

1
3 tháng 8 2018

Đáp án là B. Vì “ sensory memory” “short-term memory”, thông tin được lưu giữ chỉ được tính theo giây => long term memory là đáp án đúng