| 显示石家庄铁道大学系统石家庄铁道大学-大学英语二所有答案 |
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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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答案是：正确答案为：B
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设AmxnBx1=0mx1,证明R(A)+R(B)≤n.
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答案是：da12020121710536
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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
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答案是：正确答案为：B
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The art show was ______ being a failure; it was a great success.
A、 far from
B、 along with
C、 second to
D、 regardl
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答案是：正确答案为：A
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Many children,_______parents are away working in big cities, are taken good care of in the village.
A、 their
B、 whose
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答案是：正确答案为：B
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—You don’t seem to be quite yourself today. What’s wrong? —Oh, I’m suffering from a cold. Nothing serious， ______.
A、 y
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答案是：正确答案为：C
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_________ time and labor, cartoonists generally draw the hands of their characters with only 3 fingers and a thumb.
A、
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答案是：正确答案为：A
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The big IT company will ______ a new research center in the city.
A、 set up
B、 break up
C、 get up
D、 turn up
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答案是：正确答案为：A
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It is reported that the police will soon look______the case of the two missing children.
A、 upon
B、 after
C、 into
D、
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答案是：正确答案为：C
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—How much is the T-shirt ___________? —65 dollars.
A、 worth
B、 cost
C、 worthy
D、 paid
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答案是：正确答案为：A
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If it_____tomorrow, we will stay indoors to have our training class.
A、 rains
B、 rain
C、 will rain
D、 rained
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答案是：正确答案为：A
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If the pressure is not ________ immediately, there may be an explosion.
A、 revealed
B、 released
C、 resolved
D、 relie
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答案是：正确答案为：B
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—Glad to meet you. —____________
A、 So do I.
B、 How are you?
C、 How do you do?
D、 The same to you.
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答案是：正确答案为：C
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My uncle’s house in the downtown area is much smaller than ours, but it is twice______expensive.
A、 as
B、 so
C、 too
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答案是：正确答案为：A
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I can leave this note to ________ is in charge of foreign affairs of the university.
A、 who
B、 whom
C、 whoever
D、 wh
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答案是：正确答案为：C
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Since they aren’t answering my telephone, they ________.
A、 should have left
B、 need have left
C、 would have left
D、
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答案是：正确答案为：D
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Please write your name in the ______ space at the top of the page.
A、 empty
B、 vacant
C、 blank
D、 hollow
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答案是：正确答案为：C
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Surprisingly, the accident did very little ________ to either car.
A、 harm
B、 damage
C、 danger
D、 injury
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答案是：正确答案为：B
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Our new sales manager found out that ______ the job done is not as easy as it first appears.
A、 get
B、 got
C、 gotten
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答案是：正确答案为：D
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—Come in, please. Make yourself at home. —I’m glad you like it.
A、 Thanks. You have a nice place here.
B、 Oh, this pic
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答案是：正确答案为：A
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Every means ________ tried, but we still cannot solve this problem.
A、 is
B、 have been
C、 are
D、 has been
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答案是：正确答案为：D
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When Bob and his friends came, we____our supper then.
A、 had
B、 were having
C、 have
D、 are having
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答案是：正确答案为：B
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We had a(n) ______ with him about this problem last night.
A、 explanation
B、 impression
C、 exhibition
D、 discussion
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答案是：正确答案为：D
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Even after the speech was over, the audience ______ leave because they were so deeply moved.
A、 shouldn’t
B、 mustn’t?
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答案是：正确答案为：D
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___ twice, the postman refused to deliver our letters unless we chained our dog.
A、 Being bitten
B、 Bitten
C、 Havin
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答案是：正确答案为：B
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What a pity! He____________ the only chance of success.
A、 threw away
B、 put down
C、 gave in
D、 broke off
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答案是：正确答案为：A
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It will be up to the students to decide ______ the exact content of the college magazine will be.
A、 which?
B、 what
C
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答案是：正确答案为：B
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If you happen to meet James in Vancouver, ______ the book to him.
A、 give?
B、 confident
C、 gave?
D、 you would give
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答案是：正确答案为：A
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After going to several interviews, she eventually ________ to get a job.
A、 managed
B、 attained
C、 succeeded
D、 achi
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答案是：正确答案为：A
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Information about the new system is easy to ______ on the Internet.
A、 like
B、 go
C、 find
D、 open
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答案是：正确答案为：C
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__________she was invited to the ball made her very happy.
A、 If
B、 That
C、 When
D、 Because
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答案是：正确答案为：B
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Mr. Smith sold that magnificent cottage of his on the sea 2,000,000 dollars.
A、 at
B、 for
C、 to
D、 by
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答案是：正确答案为：B
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He is very popular with his schoolmates and feels ________ to win the election.
A、 confusing
B、 confident
C、 convinci
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答案是：正确答案为：B
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—I put him down for a well-educated man. —___________ ? —I mean that he’s a well-educated man.
A、 I beg your pardon
B、
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答案是：正确答案为：A
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—How much is the T-shirt ___________? —65 dollars.
A、 worth
B、 cost
C、 worthy
D、 paid
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答案是：正确答案为：A
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This heavy traffic is ________ for this time of the day.
A、 actual
B、 natural
C、 formal
D、 normal
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答案是：正确答案为：D
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We talked for morn than three hours without ______ a cup of tea.
A、 to have
B、 having
C、 have
D、 had
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答案是：正确答案为：B
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That big dictionary_____Tom two hundred dollars.
A、 spent
B、 paid
C、 cost
D、 took
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答案是：正确答案为：C
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She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker.
A、 whi
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答案是：正确答案为：D
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I’d like to come with you but that’s not a promise, don’t ________ it.
A、 count on
B、 call on
C、 live on
D、 wait on
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答案是：正确答案为：A
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Every means ________ tried, but we still cannot solve this problem.
A、 is
B、 have been
C、 are
D、 has been
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答案是：正确答案为：D
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The art show was ______ being a failure; it was a great success.
A、 far from
B、 along with
C、 second to
D、 regardl
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答案是：正确答案为：A
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It is generally considered unwise to give a child___________ he or she wants.
A、 however
B、 whatever
C、 whichever
D、
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答案是：正确答案为：B
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The company is starting a new advertising campaign to new customers to its stores.
A、 join
B、 attract
C、 stick
D、 tr
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答案是：正确答案为：B
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I ______ at 130 kilometers per hour when the policeman stopped me.
A、 had driven
B、 have driven
C、 drive
D、 was driv
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答案是：正确答案为：D
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Over the past decades, sea ice in the Arctic(北极) as a result of global warming.
A、 had decreased
B、 will decrease
C
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答案是：正确答案为：C
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He began to feel hungry since the previous evening.
A、 not having eaten
B、 not have eaten
C、 not eating
D、 having no
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答案是：正确答案为：A
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The driver was at______loss when______word came that he was forbidden to drive for speeding.
A、 a; /
B、 a; the
C、 the
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答案是：正确答案为：A
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There was a knock at the door again, and it was the second time someone ________ me that evening.
A、 has interrupted
B
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答案是：正确答案为：C
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She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker.
A、 whi
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答案是：正确答案为：D
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___________lessons were not difficult.
A、 Our few first short English
B、 Our first few short English
C、 Our few first
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答案是：正确答案为：B
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Health problems are closely connected with bad eating habits and a______of exercise.
A、 limit
B、 lack
C、 need
D、 dem
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答案是：正确答案为：B
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This magazine is very ______with young people, who like its content and style.
A、 familiar
B、 popular
C、 similar
D、
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答案是：正确答案为：B
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When you make a public speech, try your best to make yourself clearly ________ .
A、 understand
B、 understanding
C、 un
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答案是：正确答案为：C
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Even after the speech was over, the audience ______ leave because they were so deeply moved.
A、 shouldn’t
B、 mustn’t?
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答案是：正确答案为：D
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The college sports meet was __ till next week because of the heavy rain.
A、 put out
B、 put on
C、 put off
D、 put up
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答案是：正确答案为：C
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Since they aren’t answering my telephone, they ________.
A、 should have left
B、 need have left
C、 would have left
D、
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答案是：正确答案为：D
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The hotel was awful!___, our room was far too small. Then we found that the shower didn’t work.
A、 To begin with
B、 Af
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答案是：正确答案为：A
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The flight was supposed to take off at ten o’clock, but ________ we had to wait until eleven o’clock.
A、 in vain
B、 in
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答案是：正确答案为：D
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I’d like to introduce you ______ James Stewart, the new manager of our department.
A、 with
B、 to
C、 of
D、 on
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答案是：正确答案为：B
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