1.Tính hợp lý 2/13 - 2/7 + 4/13 - 6/13 - 5/7
2.Tìm kết quả -2022/2023 x 9/13 + -2022/2023 x 4/13
3.Tìm số nguyên y bt 1/-6 = 3/-2y
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Khách
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SV
Sinh Viên NEU
CTVVIP
2 tháng 3
I.Circle the letter A,B,C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
1.A.champion B.active C.karate D.marathon
(mấy ý sau ko rõ chữ a nào nha b :))
II.Circle the letter A,B,C or D to indicate the word that differs from the other three in the postition of primary stress in each of the following questions.
2.A.medal B.career C.racket D.sporty
III.Put the verbs in brackets in the correct tense form.
3.Alice(be)____is__ really good at doing aerobics.
4.I(use)___used___ to play volleyball,but I(not play)___don't play___ anymore.
5.We(get)___got___ up late,so we(miss)__missed____ the school bus this morning.
6.Tung(train)___Has-trained___ hard for the upcoming football match these days?
7.How often your mother(go)_does-go_____to the cinema?
IV.Circle the letter A,B,C or D to indicate the underlined part that needs correction in each of the following questions.
8.My friends and I do skiing together every winter.
A.friends B.do C.skiing D.every
9.They were hungry,but each of them ate two burgers.
A.were B.but C.them D.ate
10.How far does he go to the swimming pool?-Three times a week.
A.far B.does C.swimming D.times
2 tháng 3
☘ Trả lời :
- Từ " lũ lụt " là từ láy . Vì từ " lũ " có nghĩa nhưng từ " lụt không có nghĩa .
TT
2 tháng 3
B-D-D-A-B-B-A-C và 19 là When will Hoang Xuan Vinh won a gold medal for shooting? và 20 là Do not use a mobile phone in class
SV
Sinh Viên NEU
CTVVIP
2 tháng 3
IV.Circle the letter A,B,C or D to indicate the correct answer.
11.I can go to my hometown by coach ______ by train.
A.because B.or C.and D.either
12.___________ time do you spend doing exercise every day?
A.When B.How many C.How much D.How long
13.____________ fast did he drive his car?
A.What B.Where C.Why D.How
14.There are a lot of ____________ programmes for kids on TV.
A.educational B.educator C.education D.educate
15.This film is ____________ VTV 3 on Thursday and Friday.
A.in B.on C.at D.x
16.Trung and Minh ____________ fishing yesterday.
A.played B.went C.did D.had
17.My sister ____________ yoga last month.
A.took up B.took after C.took off D.took on
18.If you want to play badminton,you need to prepare a ______.
A.ski B.glove C.bat D.racket
VI.Writing
19.(Make questions for the underlined part.)
Hoang Xuan Vinh won a gold medal for shooting in 2001.
→When did Hoang Xuan Vinh win a gold medal?
20.(Rewrite the sentence in imperative.) You mustn't use a mobile phone in class.
Don't use a mobile phone in class
SV
Sinh Viên NEU
CTVVIP
2 tháng 3
I.Circle the letter A,B,C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
1.A.length B.though C.thick D.thunder
II.Circle the letter A,B,C or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
2.A.horror B.action C.funny D.control
III.Put the verbs in brackets in the correct tense form.
3.My children(watch)______is watching______ TV in the living room now.
4.My grandparents(do,often)_______often do_____ jogging in the morning.
5.Jane(not go)_didn't go_____ to the gym yesterday because she(be)______was______sick.
6.They(have)______had______ dinner 30 minutes ago.
7.Look!Brian(dance)______is dan______ on the stage.
IV.Circle the letter A,B,C or D to indicate the underlined part that needs correction in each of the following questions.
8.I switched on the TV,or the programmes were boring.
A.switched B.or C.programmes D.boring
9.I find this film interested,and so does my brother.
A.find B.interested C.do D.does
10.Who did ate the cake on the table?
A.did B.ate C.cake D.on the table
NH
2
H9
HT.Phong (9A5)
CTVHS
2 tháng 3
\(\dfrac{3n-2}{2n+1}\) là một số nguyên nên:
\(2\cdot\dfrac{3n-2}{2n+1}=\dfrac{6n-4}{2n+1}\) cũng là số nguyên
Ta có: \(\dfrac{6n-4}{2n+1}=\dfrac{6n+3-7}{2n+1}=\dfrac{3\left(2n+1\right)-7}{2n+1}=3-\dfrac{7}{2n+1}\)
Để phân số có giá trị nguyên thì `2n+1∈Ư(7)`
`=>2n+1∈{1;-1;7;-7}`
`=>2n∈{0;-2;6;-8}`
`=>n∈{0;-1;3;-4}`
Vậy: ...
SV
Sinh Viên NEU
CTVVIP
3 tháng 3
51. Food is included in the cost of a room. A
52. A princess used to live in the building. B
53. Sunningdale Hotel is on a quiet road. B
54. An Express bus will take you from the hotel to the centre of town. B
55. The hotel provides facilities for washing clothes.A
56. The hotel prefers guests who stay for a short time. B
57. You can have dinner as late as 11 pm. A
58. You are allowed to cook food in your room. B
59. You can only play music until 11 pm. A
60. It is a long way to walk from the hotel to the main railway station. A
B1:
\(\dfrac{2}{13}-\dfrac{2}{7}+\dfrac{4}{13}-\dfrac{6}{13}-\dfrac{5}{7}\\ =\left(\dfrac{2}{13}+\dfrac{4}{13}-\dfrac{6}{13}\right)-\left(\dfrac{2}{7}+\dfrac{5}{7}\right)\\ =\dfrac{2+4-6}{13}-\dfrac{2+5}{7}\\ =\dfrac{0}{13}-\dfrac{7}{7}\\ =0-1=-1\)
B2:
\(-\dfrac{2022}{2023}\times\dfrac{9}{13}+\left(-\dfrac{2022}{2023}\right)\times\dfrac{4}{13}\\ =-\dfrac{2022}{2023}\times\left(\dfrac{9}{13}+\dfrac{4}{13}\right)\\ =-\dfrac{2022}{2023}\times\dfrac{13}{13}\\ =-\dfrac{2022}{2023}\times1=-\dfrac{2022}{2023}\)
B3:
\(\dfrac{1}{-6}=\dfrac{3}{-2y}\\ \Rightarrow\dfrac{3}{-18}=\dfrac{3}{-2y}\\ \Rightarrow-2y=-18\\ \Rightarrow y=\left(-18\right):\left(-2\right)=9\)