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【单选题】
设（2x+ ） 4 =a 0 +a 1 x+a 2 x 2 +a 3 x 3 +a 4 x 4 ，则（a 0 +a 2 +a 4 ） 2 -（a 1 +a 3 ） 2 = [ ]A.
2
B.
-2
C.
1
D.
-1
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【单选题】Most people are ______ when they hear about people ______ come face to face with danger in order to save others. [ ]
A.
surprising; that
B.
exciting; as
C.
amazed; who
D.
interested; which
【单选题】--- May I ask a favour of you? --- ______.
A.
It’s my pleasure
B.
I’ve no time
C.
Ask please
D.
Sure, go ahead
【单选题】I’ve got to go now. Something has just______ at school and I’m needed there.
A.
come to
B.
come up
C.
come in
D.
come over
【简答题】People drink in a party in order to ______.
【单选题】______, I should ask them some questions.
A.
Should they come to us
B.
If they come to us
C.
Were they come to us
D.
Had they come to us
【单选题】— Why are you so upset? What has happened? — You know, I’ve come to the point ______ I can’t stand her arguing any longer.
A.
where
B.
which
C.
whether
D.
what
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