Đề thi giữa kì 2 Tiếng Anh 12 có đáp án (Đề 1)

It’s a sound you will probably never - It can be inferred from the

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Question: It can be inferred from the passage that research concerning the distress signals of trees______.

has been unproductive up to now

is no longer sponsored by the government

was conducted many years ago

is continuing

Giải thích

Đáp án D.