The word “exert” in bold in paragraph 1 is closest in meaning to ________.
Đáp án A
Từ "exert" in đậm ở đoạn 1 gần nghĩa nhất với________.
A. gây ra
B. cho phép
C. thay đổi
D. cần
exert (v) = cause (v) : gây
Dịch nghĩa : Những thợ lặn sâu thường ít nguy hiểm hơn nếu khi Heli được thay thế cho khí Nitơ, bởi vì dưới áp lực, khí heli không gây ra tác dụng gây mê tương tự.
It can be inferred from the passage that the ice would not be flat if ______
If you are in a foreign country, the best way the writer suggests to you is to wear .
If you visit an American friend at home in the evening, you may find that your friend wears
The changes possibly caused by the cell phones are mainly concerned with
The man mentioned in the passage, who used his cell phone too often,
The word "vulnerable" in paragraph 4 is closest in meaning to _____.