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【简答题】
给定k∈N*，设函数f：N*→N*满足：对于任意大于k的正整数n，f(n)=n-k， (1)设k=1，则其中一个函数f在n=1处的函数值为（ ）； (2)设k=4，且当n≤4时，2≤f(n)≤3，则不同的函数f的个数为（ ）。
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举一反三
【单选题】- Is my illness serious? - ____________.
A.
Well done.
B.
Don't worry. You will be well soon.
C.
Sorry, I have no idea.
D.
It's really bad for you.
【单选题】爬泳两臂的配合大致分为三种形式 , 其中 , 当一臂入水时 , 另一臂处于肩前方与水平面成 30° 角左右、刚进入水划阶段的配合形式是指 ( ) 。
A.
前交叉
B.
中交叉
C.
后交叉
D.
都不是
【简答题】People are reluctant to admit that they don't listen well.
【单选题】— How do you like the curtains? —Well, I’m afraid they don’t ________ very well with the wallpaper.
A.
go
B.
match
C.
suit
D.
fit
【简答题】You take it if you don’tfeel well．
【单选题】But for her charming smile, he ______ her.
A.
wasn't married to
B.
won't marry
C.
wouldn't have married
D.
wouldn't marry with
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