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【单选题】
()trouble ahead.
A.
There seem to be
B.
There seems to be
C.
There seem to have
D.
There seems to have
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举一反三
【单选题】设f(x)=φ(x)(1+|sinx|)，φ(x)可导，则φ(0)=0是f(x)在点x=0处可导的（）
A.
充分必要条件．
B.
必要条件，但非充分条件．
C.
充分条件，但非必要条件．
D.
既非必要条件，又非充分条件．
【单选题】Many doctors are still general practitioners, but the tendency is toward specialization in medicine.
A.
rumor
B.
trend
C.
prejudice
D.
security
【单选题】The river widens considerably as it begins to turn west.
A.
twists
B.
stretches
C.
broadens
D.
bends
【单选题】We ascribe his great success to his intelligence and persistence.
A.
distribute
B.
attribute
C.
contribute
D.
subject
相关题目：
【单选题】设f(x)=φ(x)(1+|sinx|)，φ(x)可导，则φ(0)=0是f(x)在点x=0处可导的（）
A.
充分必要条件．
B.
必要条件，但非充分条件．
C.
充分条件，但非必要条件．
D.
既非必要条件，又非充分条件．
【单选题】Many doctors are still general practitioners, but the tendency is toward specialization in medicine.
A.
rumor
B.
trend
C.
prejudice
D.
security
【单选题】The river widens considerably as it begins to turn west.
A.
twists
B.
stretches
C.
broadens
D.
bends
【单选题】We ascribe his great success to his intelligence and persistence.
A.
distribute
B.
attribute
C.
contribute
D.
subject
参考解析：
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