Haze weather has become common in some major cities in China. We all wonder ________.
A.how is the air polluted |
B.what can we do with the bad weather |
C.why the air is polluted seriously |
D.what are the real reasons |
Haze weather has become common in some major cities in China. We all wonder ________.
A.how is the air polluted |
B.what can we do with the bad weather |
C.why the air is polluted seriously |
D.what are the real reasons |
试题篮
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