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【单选题】
P 6 News report 3 Q 2A.
B.
C.
D.
D
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【简答题】习题6.5 求下列函数的极值: (1)
【单选题】The air in big cities _____very dirty by factories.
A.
are often made
B.
is often made
C.
have often made
D.
has often made
【单选题】Do you know the student____________?
A.
whom I often talk
B.
with who I often talk
C.
I often talk with
D.
that I often talk
【简答题】A．It's often cold and snowy. B．It's often wet and warm. C．It's often cool and dry. D．Not mentioned in the conversation.
【单选题】Turn on the television or open a magazine and you ________ advertisements showing happy families. A. will often see B. often see C. are often seeing D. have often seen
A.
will often see
B.
often see
C.
are often seeing
D.
have often seen
【简答题】4函数的极值与最值练习题.docx
【简答题】函数曲线 在定义域内( )． (A)有极值有拐点 (B)有极值无拐点 (C)无极值有拐点 (D)无极值无拐点
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