The researchers developed the first flu vaccination recently. There was a reliable protection against flu in this country.
A. But for the first flu vaccination, there wouldn't be a reliable protection against flu in this country.
Giải bởi Vietjack
Giải thích:
But for + N/V-ing, S + would (not) have P2: nếu không vì/nhờ/có …
Not until S + V1 + trợ V2 + S + V2: Mãi cho đến khi … thì …
So + adj + be + S + that…: Quá … đến nỗi…
Scarcely + trợ V1 + S + V + when + S + V2: Vừa mới … thì đã …
Tạm dịch: Gần đây, các nhà nghiên cứu đã phát triển loại vắc-xin cúm đầu tiên. Có một sự bảo vệ đáng tin cậy chống lại bệnh cúm ở đất nước này.
A. Sai ở “wouldn’t” => wouldn’t have
B. Mãi cho đến khi các nhà nghiên cứu phát triển loại vắc-xin cúm đầu tiên gần đây thì mới có biện pháp bảo vệ đáng tin cậy chống lại bệnh cúm ở đất nước này.
C. Sự bảo vệ chống lại bệnh cúm ở quốc gia này đáng tin cậy đến mức các nhà nghiên cứu đã phát triển loại vắc xin cúm đầu tiên gần đây. => sai nghĩa
D. Các nhà nghiên cứu vừa mới phát triển vắc-xin cúm đầu tiên trong thời gian gần đây thì có một biện pháp bảo vệ đáng tin cậy chống lại bệnh cúm ở đất nước này. => sai nghĩa
Chọn B.
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
He has been jobless and often has to ask his parents for money.
In these difficult times, the company may have to _______ up to 100 laborers.
________ the instructions twice, I still couldn't understand how to use this machine.
Which of the following is closest in meaning to the word "unveiled" in paragraph 3?
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Black holes may also occur when several large and dense stars collide with one (43) _____in space.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
Mike didn't follow his parents' advice on choosing his career. He regrets it now.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
Going Inside Black Holes
One of the strangest phenomena in the universe is the black hole. For years, scientists have studied black holes in an (39) ______ to better understand how they function. Like vacuum cleaners, black holes will suck up anything (40) ______ crosses their path. The incredible sucking power that black holes generate comes from gravity. They can quickly swallow up anything including planets, space debris, and anything else imaginable. Even light cannot escape the (41) ______ of black holes. Since they are able to pull in light, black holes are nearly impossible to see even with high-powered telescopes. (42) ______, scientists are able to detect the presence of black holes in space because of their effect on an observed area.
Black holes can originate in a few ways. One type of black holes occurs when a star comes to the end of its lifecycle and it dies in a supernova explosion. They can also occur when the mass of a neutron star becomes so great that it collapses in on itself. Black holes may also occur when several large and dense stars collide with one (43) _____in space.
