Hiện nay tình hình dịch COVID diễn ra phức tạp. Ban Chỉ Huy Liên Đội mua 1m khổ 80cm loại 3 Zem( tấm mica). BCHLĐ mua về làm kính chống dịch có kích thước : chiều dài 17cm, rộng 22cm. Hỏi 1m khổ 80cm loại 3 zem có thể làm được bao nhiêu cái kính chông dịch?

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VII. Choose the word or phrase (A, B, c or D) that best fits the blank space in the following passage? Long ago a lot of people (41) ........ the moon was a god. Other people thought it was just a light in the sky. And others thought it was a big (42) ........ of cheese! The telescopes were made, and men saw that the moon was really another world. They wondered (43) ........ it was like. They dreamed of going there. On July 20, 1969, that dream came (44) ........ . Two American astronauts landed on the moon. (45) ........ names were Neil Armstrong and Edwin Aldrin.The first thing the men found was that the moon is covered (46) ........ dust. The dust is so thick that the men left (47) ........ where they walked. Those were the first marks a living thing had ever made on the moon. And they could (48) ........ there for years and years. There is no wind or rain to wipe them off. The two men (49) ........ rocks to bring back to Earth for study. They dug up dirt to bring back. They set up machines to find out things people wanted to know. Then they were off on their long trip (50) ........ the earth. 41a. thought b. guessed c. told d. said 42a. form b. stone c. ball d. round 43a. how b. which c. that d. what 44a. real b. true c. unreal d. untrue 45a. Their b. His c. Its d. Theirs 46a. by b. for c. to d. with 47a. fingerprints b. footprints c. handprints d. prints 48a. go b. remain c. put d. run 49a. got up b. gave up c. picked up d. set up 50a. back to b. from to c. into d. onto

VI. Choose the correct sentence from the four options a, b, c or d 31 The reporter/ wanted/ know/ why/ I/ not/ taken/ a picture/ when/ I/ had seen. the UFO. a. The reporter wanted know why I hadn’t taken a picture when I had seen the UFO. b. The reporter wanted know why I didn’t taken a picture when I had seen the UFO. c. The reporter wanted to know why I hadn’t taken a picture when I had seen the UFO. d. The reporter wanted to know why I didn’t taken a picture when I had seen the UFO. 32 Do/ you/ think/ astronauts/ feel/ great sense/ loneliness/ when/ travel/ alone/ space? a. Do you think astronauts feel great sense of loneliness when traveling alone in space? b. Do you think astronauts feel great sense of loneliness when travel alone in space? c. Do you think astronauts feel a great sense of loneliness when travel alone in space? d. Do you think astronauts feel a great sense of loneliness when traveling alone in space? 33 About 95%/ the atmosphere/ on Mars/ be/ carbon dioxide, which/ be/ poisonous/ breath a. About 95% of the atmosphere on Mars is carbon dioxide, which is poisonous to breath. b. About 95% on the atmosphere on Mars is carbon dioxide, which is poisonous breath. c. About 95% on the atmosphere on Mars is carbon dioxide, which is poisonous to breath. d. About 95% of the atmosphere on Mars is carbon dioxide, which is poisonous breath. 34 In the film, John Harrison/ be/ space terrorist/ who/ want/ destroy/ the Earth. a. In the film, John Harrison is a space terrorist who wants destroy the Earth. b. In the film, John Harrison is space terrorist who wants to destroy the Earth. c. In the film, John Harrison is a space terrorist who wants to destroy the Earth. d. In the film, John Harrison is space terrorist who wants destroy the Earth. 35 The/ biggest problem/ for/ humans/ live/ other planets/ be/ lack/ atmosphere and water. a. The biggest problem for humans to live in other planets is lack of atmosphere and water. b. The biggest problem for humans living on other planets is lack of atmosphere and water. c. The biggest problem for humans to living in other planets is lack of atmosphere and water. d. The biggest problem for humans to live on other planets is lack of atmosphere and water. 36 The/ with/ Moon/ a/ plains/ was/ mountains/ like/ and/ valleys/ desert/. a. The Moon was like a desert with plains, mountains, and valleys. b. The Moon was a desert like with plains, mountains, and valleys. c. The Moon like was a desert with plains, mountains, and valleys. d. The Moon was like with a desert plains, mountains, and valleys. 37 Do/ 88 Earth days/ you/ it/ for/ Mercury/ that/ takes/ the Sun/ orbit/ once/ to? a. Do you know that it takes 88 Earth days for Mercury to orbit the Sun once? b. Do you know that 88 Earth days takes it for Mercury to orbit the Sun once? c. Do you know that Mercury takes 88 Earth days for it to orbit the Sun once? d. Do you know that it takes to orbit 88 Earth days for Mercury the Sun once? 38 Jupiter/ in/ largest/ is/ solar/ the/ system/ the/ planet. a. Jupiter is the planet largest in the solar system. b. Jupiter is the largest planet in the solar system. c. Jupiter is the largest solar planet in the system. d. Jupiter is the largest system planet in the solar. 39 NASA/ launch/ decided/ Cape Canaveral/ end/ at/ from/ of/ the/ a rocket/ this year. a. NASA decided launch to a rocket from Cape Canaveral at the end of this year. b. NASA decided launch from a rocket to Cape Canaveral at the end of this year. c. NASA decided to launch a rocket at from Cape Canaveral the end of this year. d. NASA decided to launch a rocket from Cape Canaveral at the end of this year. 40 They/ to/ are/ a/ that/ accommodate/ could/ the/ planet/ attempting/ find/ Earth’s population. a. They are attempting to find a planet that could accommodate the Earth’s population. b. They are to find attempting a planet that could accommodate the Earth’s population. c. They are attempting to accommodate a planet that could find the Earth’s population. d. They are attempting to find a population that could accommodate the Earth’s planet.