1 . I don’t know whether I can attend the meeting. I’m afraid that you have to wait a moment and allow me to check my _____.
A.schedule | B.fare | C.detail | D.item |
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2 . —What does PM 2.5 mean?
—It's a professional ________ indicating the condition of air pollution.
—It's a professional ________ indicating the condition of air pollution.
A.term | B.item | C.number | D.mark |
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