Đáp án B
Raise: nâng lên
Rise: tăng lên
Drop: rơi
Fall: ngã xuống
According to the passage, which of the followings supports healthy ecosystems?
Which of the followings is the flow of water from the ground to the surface?
It works like a greenhouse, that’s why we call (25) _________the Green House effect.
According to the passage, what can be learnt about passive students?
According to the passage, to learn new information, low-achieving students do NOT______.
The word "adjoining" in bold in paragraph 2 is closest in meaning to___________.
When (27)_______ visual signals are not possible, more formal signals may be needed.