皮皮学，免费搜题
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搜题
【单选题】
在曲柄滑块机构中,若以曲柄为主动件,则有( )个死点位置。A.
0
B.
1
C.
2
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皮皮学刷刷变学霸
举一反三
【单选题】A: Hi, Bob, this is my sister, Cindy. Bob: _________________ Cindy: How do you do?
A.
How are you?
B.
Nice meeting you.
C.
How is everything going?
D.
How do you do?
【单选题】—Hi, Cindy! How are you? — . [ ]
A.
How are you?
B.
How do you do?
C.
Yes, it is.
D.
I'm fine, thanks.
【单选题】Hi, Cindy, how are you? -- ____________
A.
How are you ？
B.
I’m OK.
C.
It’s OK.
D.
I’m Alice
【单选题】How ______ Cindy grows! She’s almost as tall as her mother now.
A.
cute
B.
strong
C.
fast
D.
straight
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