Câu hỏi:
08/11/2020 489Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks from 27-38.
DISAPPEARING ALASKAN SEALS
On a winter afternoon, a dozen male Northern fur seals are on an island off south-western Alaska. To look at them, fighting for territory on the rocks, it’s hard to imagine that they are at the (27)____________of a baffling scientific mystery: why is this species beginning to disappear? These seals- which can weigh up to 270 kilograms-have an important and symbolic (28)_________in Alaska’s history. Their soft and luxurious fur, the coveted prize during the huge commercial sea harvests that were legal here in the Bering Sea through the early 20th century, was once so valuable it (29)_________Alaska’s economy. Starting in the 1950s, for reasons that are (30)_______because the harvests by then tended to be fairly small, the seal population began a slow decline . But lately it has been falling drastically, declining at an alarming (31)________of 6 per cent a year since 1998. From a (32)_________ of more than 2 million in Alaska in 1948, their numbers have fallen to about 1 million.
So (33)________, no one has been able to establish a precise cause for this, although theories (34)___________. The seals' food supply may be (35)________, or another species may be (36)________on the seals- perhaps killer whales, which no longer have as many great whales to eat because of harvesting of those mammals. Some people have suggested that the decline can be (37)______to entanglement in fishing nets ,but scientists say they doubt that this alone could (38)_________the recent population decline.
Điền vào ô 34.
Đáp án chính xác
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Trả lời:
Giải bởi Vietjack
Đáp án C
A: nở rộ
B: phát triển
C: nhiều, đầy rẫy
D: leo thang
So (33), no one has been able to establish a precise cause for this, although theories (33): cho đến nay không ai có thể lập luận được 1 lí do chính đáng cho việc này dù lý thuyết thì có rất nhiều.
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the word CLOSEST in meaning to the underlined word in each of the following questions.
I think we can safely say now that we have got our money back, we are home and dry.
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Câu 2:
Mark the letter A, B, C or D on your answer sheer to indicate the most suitable response to complete each of the following exchanges.
Lisa: “Have you been able to reach Peter?” Gina: “__________”
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Câu 3:
Mark the letter A, B, C or D on your answer sheer to indicate the most suitable response to complete each of the following exchanges.
“I’d like to change some money.” B: “_______”
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Câu 4:
Mark the letter A, B, C or D on your answer sheet to indicate the word CLOSEST in meaning to the underlined word in each of the following questions.
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Câu 5:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
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Câu 6:
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Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined word in each of the following questions.
My brother has become a bit of a couch potato since he stopped playing football.
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