题目内容
（请给出正确答案）
A.Are you feeling better？
B.What’s trouble with you？
C.Is there wrong with you？
D.What’s the matter with you？
如果结果不匹配，请 联系老师 获取答案
更多“— _______rn— I’m suffering fro…”相关的问题
— _______rn— I failed my driving test again.
A、What shall I do？
B、I’m down in spirits.
C、What are you doing？
D、What’s up？
—This is the worst film ever produced. Do you think so？ rn—_______
A、You’re wrong
B、I don’t think so， I’m afraid
C、Not at all
D、No， that’s not real
A.Don’t ask m
B.It’s good for you.
C.I’d rather not.
D.Good choic
E. You need some warm shoes for the winter.
试证明：
设{Bα}α∈I是Rn中一族开球，记
设非负矩阵A∈Rn×n，若A有正特征向量x，则对所有m=1，2，…和i=1，2，…，n，有
，其中Am=(ij(m))．特别地，若γ(A)＞0，则对m=1，2，…，都有γ(A)－1Am的各元一致有界．
—Will you do me a favor？ rn—________________.
A、My pleasure.
B、Yes， I do.
C、Yes， I will.
D、I’d be glad to.
设有指标集I，{fα(x)：α∈I}是Rn上可测函数族，试问函数S(x)=sup{fα(x):α∈I}在Rn上是可测的吗？
— Which is your preference， tea or coffee？rn— _______
A、OK， thanks.
B、I like both.
C、Can I choose？
D、I choose tea any time.
试证明：
设f:Rn→Rn，且满足
(i)若
(ii)若{Ki}是Rn中递减紧集列，则
