出自:石家庄铁道大学-大学英语二

If you happen to meet James in Vancouver, ______ the book to him. A、 give? B、 confident C、 gave? D、 you would give
What a pity! He____________ the only chance of success. A、 threw away B、 put down C、 gave in D、 broke off
___ twice, the postman refused to deliver our letters unless we chained our dog. A、 Being bitten B、 Bitten 　 C、 Having bitten D、 To be bitten
When Bob and his friends came, we____our supper then. A、 had B、 were having 　 C、 have D、 are having
Surprisingly, the accident did very little ________ to either car. A、 harm B、 damage C、 danger D、 injury
I can leave this note to ________ is in charge of foreign affairs of the university. A、 who B、 whom C、 whoever D、 whomever
My uncle’s house in the downtown area is much smaller than ours, but it is twice______expensive. A、 as B、 so C、 too D、 very
—Glad to meet you. —____________ A、 So do I. B、 How are you? C、 How do you do? D、 The same to you.
If the pressure is not ________ immediately, there may be an explosion. A、 revealed B、 released C、 resolved D、 relieved
If it_____tomorrow, we will stay indoors to have our training class. A、 rains B、 rain C、 will rain D、 rained
It is reported that the police will soon look______the case of the two missing children. A、 upon B、 after C、 into D、 out
The big IT company will ______ a new research center in the city. A、 set up B、 break up C、 get up D、 turn up
_________ time and labor, cartoonists generally draw the hands of their characters with only 3 fingers and a thumb. A、 To save B、 Saved C、 Saving D、 Having saved
—You don’t seem to be quite yourself today. What’s wrong? —Oh, I’m suffering from a cold. Nothing serious， ______. A、 yet B、 indeed C、 though D、 anyway
Many children,_______parents are away working in big cities, are taken good care of in the village. A、 their B、 whose 　 C、 of them D、 with whom
1、 下列说法不正确的是（ ） A、 B、 若B可以由A线性表示且B所含向量的个数小于A所含向量的个数，则B线性相关 C、 任何一个含有零向量的向量组都线性相关 D、 单个零向量一定线性相关，而单个非零向量一定线性无关
设AmxnBx1=0mx1,证明R(A)+R(B)≤n.
已知A=(1 2 -2 3, -2 -4 4 -6,2 8 -2 0,-1 0 3 -6)则R(A)=() A.1 B.2 C.3 D.4
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