Một bể cá dạng hình hộp chữ nhật làm bằng kính (không có nắp) có chiều dài 1,1m, chiều rộng 0,6m, chiều cao 0,6m. Mực nước ban đầu trong bể cao 0,35m.
a, Tính diện tích kính dùng để làm bể cá đó.
b, Người ta cho vào bể một hòn đá có thể tích 99dm3. Hỏi mực nước trong bể lúc này cao bao nhiêu xăng-ti-mét?
camon mng ah
Finish the sentences in such a way that it means the same as the given one
41. The children should not stay up late
-> The children ought is
42. How high is the Big Ben Clock Tower?
-> What is
43. How long is the Mekong River?
-> What is
44. I haven’t seen her at this club before
-> This is the first time I
45. Bill last called me five days ago
=> Bill hasn't
Read the passage and then answer the questions True (T) or False (F)
Computers are now very useful and important for people all over the world. Computers have been in use widely in Viet Nam nowadays and they completely changed the face of Viet Nam.
Computers have contributed greatly to the modernization of Viet Nam. With the help of computers, we can communicate with the other people thousands of kilometers away in a second. We can know the information on science and technology, medicine or education not only in our school but also in other countries very quickly. Accounting tasks took a person the whole day to calculate but now it can be accomplished in a very short time. Some universities without libraries is now stored in the universities’ computers. Students can send and receive messages by using computers. Computers are wonderful. They can help us save time
36. Computers are not very useful and important for many people …………………
37. Computers have been used widely in Vietnam nowadays …………………
38. Computers help us communicate with the other people thousands of ………………..
kilometers away in a minute
39. Students can send and receive messages by using telephone ………………..
40. We can store all the information in the libraries of the universities in computers……………….
Choose the correct answer A,B,C or D for each of the gaps to complete the following text
English is a very useful language. If we (31)…………..English, we can go to any countries we like. We will not find it hard to make people understand (32)……………….we want to say. English also helps us to learn all kinds of things. Hundreds of books are (33)………………….in English everyday in (34) ………………countries. English has also helped to spread ideas and knowledge (35)……………….all corners of the world. Therefore, the English language has helped to spread better understanding and friendliness among the countries of the world.
31. A. to know B. know C. knew D. known
32. A. what B. where C. when D. how
33. A. write B. wrote C. written D. writing
34. A. much B. lot of C. many D. a lots of
35. A. in B. with C. at D. to