Thứ bảy, 15/03/2025
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Câu hỏi:

20/07/2024 2,749

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It was CFCs.(A) which were used (B) in aerosols, refrigerators and solvents, which (C) made the dangerous hole in the ozone layer over (D) Antartica.

A. CFCs

B. were used

C. which

Đáp án chính xác

D. over

 Xem lời giải

Trả lời:

verified Giải bởi Vietjack

Đáp án C.

Đây là dạng câu It-cleft sentence, nhấn mạnh chủ ngữ chỉ vật nên phải đổi which that

Tạm dịch: Chính CFCs, hợp chất được sử dụng trong bình xịt, tủ lạnh và dung môi, đã tạo ra một l nguy him trong tầng ôzôn phía trên Nam cực.

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