________there are a large number of chemical factories, the air is likely to be polluted.
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A
Where
B
That    
C
Though
D
As
推荐题目
-What do you think made Jane’s parents so disappointed?-____________.
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A
She refused to live with them
B
Her refusing to live with them
C
Because she refused to live with them
D
Since she refused to live with them
 There were two boys in the lab,       did the experiment successfully.
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A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
The other day, only an old couple came to see my art exhibitions, ______thought highly of them.  
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A
none of whom
B
neither of whom
C
neither of them
D
both of them