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【单选题】
已知F(x)是连续函数f(x)的一个原函数,则 =( )A.
F(x)-F(a)
B.
F(t+2a)-F(3a)
C.
F(x+2a)-F(3a)
D.
F(t)-F(a)
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反馈参考答案：
举一反三
【单选题】Don’t worry. I will ________my younger sister.
A.
take off
B.
take care of
C.
take out
D.
take after
【单选题】Don’t worry, I will ________my younger sister.
A.
takes care of
B.
took care of
C.
take care of
【单选题】—Tommy, you can never let others know what I have told you today. —Don’t worry. I will keep the ______.
A.
secret
B.
money
C.
address
D.
grade
【单选题】—Tommy, you can never let others know what I have told you today. —Don’t worry. I will keep the ______.
A.
address
B.
money
C.
secret
D.
stone
相关题目：
【单选题】Don’t worry, I will ________my younger sister.
A.
takes care of
B.
took care of
C.
take care of
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