Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Chọn A.
Dựa vào bảng đã cho ta có bảng phân bố tần số; tần suất như sau:
Ta lập bảng phân bố tần số ghép lớp:
Lớp |
L 1 |
L 2 |
L 3 |
L 4 |
L 5 |
L 6 |
|
Tần số |
4 |
6 |
11 |
6 |
3 |
2 |
n=32 |
Số học sinh có số điểm trong nửa khoảng [50,80) là 6+11+6=23
Chọn A
For question 46-55, read the text below and decide which word A, B, C or D best fits each space. Write your answer on YOUR ANSWER part.
Diaries
A diary is a daily record of events, thoughts and feelings (46)______ either for the writer's own personal satisfaction or for (47)______ use. Most diarists (48)______ expect nor necessarily want anyone else to read what they have written, so, on the (49)______ only they and perhaps their relatives and (50)______ friends ever see their writings. On the other hand, some people do write with the (51)______ of informing and entertaining the public, although often diaries are only (52)______ and published after the author's death.
One example of a diarist who never expected his diary to be (53)______ by the public was Samuel Pepys, who lived in the 17th century. His diary is the most impressive (54)______ the English language, recording some of the greatest (55)______ in English history, yet it is also the story of a most lovable man’s life.
46. A. possessed B. held C. kept D. stocked
47. A. later B. latter C. late D. then
48. A. not B. either C. none D. neither
49. A. all B. general C. whole D. everything
50. A. narrow B. close C. near D. tight
51. A. reason B. fact C. intention D. function
52. A. explored B. excavated C. discovered D. invented
53. A. seen B. revealed C. shown D. exhibited
54. A. to B. for C. of D. in
55. A. problems B. materials C. events D. numbers
For question 46-55, read the text below and decide which word A, B, C or D best fits each space. Write your answer on YOUR ANSWER part.
Diaries
A diary is a daily record of events, thoughts and feelings (46)______ either for the writer's own personal satisfaction or for (47)______ use. Most diarists (48)______ expect nor necessarily want anyone else to read what they have written, so, on the (49)______ only they and perhaps their relatives and (50)______ friends ever see their writings. On the other hand, some people do write with the (51)______ of informing and entertaining the public, although often diaries are only (52)______ and published after the author's death.
One example of a diarist who never expected his diary to be (53)______ by the public was Samuel Pepys, who lived in the 17th century. His diary is the most impressive (54)______ the English language, recording some of the greatest (55)______ in English history, yet it is also the story of a most lovable man’s life.
46. A. possessed B. held C. kept D. stocked
47. A. later B. latter C. late D. then
48. A. not B. either C. none D. neither
49. A. all B. general C. whole D. everything
50. A. narrow B. close C. near D. tight
51. A. reason B. fact C. intention D. function
52. A. explored B. excavated C. discovered D. invented
53. A. seen B. revealed C. shown D. exhibited
54. A. to B. for C. of D. in
55. A. problems B. materials C. events D. numbers
a) ( -125) + 100 + 80 + 125 + 20
= [ ( -125)+125] + ( 80+20) + 100
= 0 + 100 + 100 = 200
b) 27 + 55 + (-17) + ( - 55)
= [ 27+(-17)] +[ 55+(-55)]
= 10 + 0 = 10
c) (-92) + (-251) + (-8) + 251
= [ (-92) + (-8)] + [ (-251)+251]
= (-100) + 0 = -100.
d) (-31) + (-95) +131 + (-5)
= [ (-31)+131] +[ (-95)+(-5)] = 100 + (-100) = 0
e) (187 - 23) - (20-180)
= 187 - 23 - 20 + 180 = (187-180) - (23-20) = 7 - 3 = 4
g) (-50+19+143) - (-79+25+48)
= -50+19+143 + 79 - 25 - 48
= [ -50-25] + (19 + 79) + 143 - 48
= -75 + 98 + 143 - 48 = 143 - 75 + ( 98 -48)
= 68 + 50 = 118
Trong tất cả các đáp án, ta chỉ chọn được đáp án D, vì however có thể ở giữa hai dấu phẩy Although: mặc dù. thường đứng trước một mệnh đề,
Despite + N: mặc dù
But; nối hai từ, mệnh đề, và cũng thường đứng trước 1 mệnh đề
b đúng khong á :)))
D. 88 và 55