Câu hỏi:
24/04/2020 262Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become (17) ______if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies.
Some birds, (18) ______as parrots are caught alive and sold as pets. For many animals and birds, the problem is that their habitat - the place where they live - is disappearing. More (19) ______is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them (20) ______ better crops, but these chemicals pollute the environment and harm wildlife. The most successful animal on earth - human beings - will soon be the only ones left, (21) ______ we can solve this problem.
Điền ô số 21
Đáp án chính xác
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Trả lời:
Giải bởi Vietjack
Đáp án B
A. however: mặc dù- liên từ chỉ sự đối lập.
B. unless: trừ phi, nếu không (=if not).
C. because: bởi vì- liên từ chỉ kết quả.
D. if: nếu.
Dịch: Loài động vật thành công nhất trên trái đất – loài người- sẽ sớm là loài còn lại duy nhất, nếu chúng ta không giải quyết được vấn đề này.
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