| 显示青书学堂系统河北建筑工程学院-线性代数所有答案 |
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They regard these men as their _____ enemies.(本题1.0分)
A、 death
B、 dead
C、 deadly
D、 deadlines
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答案是：标准答案：C
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When his wife and two little children left him, he was very _____ .(本题2.0分)
A、 alone
B、 along
C、 lonely
D、 l
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答案是：标准答案：C
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You see the lightning _____ it happens, but you hear the thunder later.(本题2.0分)
A、 the instant
B、 for an instant
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答案是：标准答案：A
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Thomas said that he was late because he was caught in a traffic jam. That was a _____ story..(本题2.0分)
A、 like
B、 a
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答案是：标准答案：C
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There are few scientific and technical books that are not ______at our university library.(本题2.0分)
A、 available
B、
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答案是：标准答案：A
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This street is much ________ than that one.(本题2.0分)
A、 straight
B、 straighter
C、 straightest
D、 more straigh
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答案是：标准答案：B
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Being deaf hasn’t stopped Karen _____ her ambition to be a hairdresser.(本题2.0分)
A、 fulfilling
B、 finishes
C、 fu
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答案是：标准答案：A
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The new edition of this book is _____ expensive than the old one .(本题2.0分)
A、 fewer
B、 more much
C、 less
D、
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答案是：标准答案：C
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A healthy life is frequently thought to be _____ with the open countryside and home growth food.(本题2.0分)
A、 tied
B、
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答案是：标准答案：D
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Don’t blame the youth. I think the young generation is _____ of trust.(本题2.0分)
A、 worth
B、 worthy
C、 worthless
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答案是：标准答案：B
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It’s very _____ of you not to talk aloud while the baby is asleep.(本题2.0分)
A、 concerned
B、 careful
C、 considera
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答案是：标准答案：D
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– I will give you some picture books. – The ________， the ________.(本题2.0分)
A、 more； better
B、 many； better
C、
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答案是：标准答案：A
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He said that the driver must have had an accident; otherwise he _____ by then.(本题2.0分)
A、 would have arrived
B、 mu
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答案是：标准答案：A
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He bought a _____ carpet yesterday.(本题2.0分)
A、 large beautiful green Chinese
B、 Chinese beautiful large green
C、
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答案是：标准答案：C
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Clark felt that his _____ in one of the most dramatic medical experiments of all time was worth the suffering he underwe
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答案是：标准答案：D
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With _____ three inches of rain falling in a six-month period, the farmers found it necessary to irrigate the land.(本题2.
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答案是：标准答案：A
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I try to _____ a few dollars each month in order to buy a new bike.(本题2.0分)
A、 set up
B、 set out
C、 set off
D
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答案是：标准答案：D
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The football game comes to you _____ from New York .(本题2.0分)
A、 lively
B、 alive
C、 live
D、 living
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答案是：标准答案：C
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My camera can be _____ to take pictures in cloudy or sunny conditions.(本题2.0分)
A、 treated
B、 adjusted
C、 adapte
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答案是：标准答案：B
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Doesn’t the clown look _____ ?(本题2.0分)
A、 fun
B、 laugh
C、 laughter
D、 funny
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答案是：标准答案：D
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I was _____ by their kindness and moved to tears.(本题2.0分)
A、 preoccupied
B、 embarrassed
C、 overwhelmed
D、 co
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答案是：标准答案：C
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I fail to _____ ever meeting her.(本题2.0分)
A、 recall
B、 pretend
C、 plan
D、 hope
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答案是：标准答案：A
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18. Someone is knocking at the door _____.(本题2.0分)
A、 aloud
B、 loud
C、 loudly
D、 aloudly
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答案是：标准答案：C
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His lectures on Roman history would do credit _____ a real expert.(本题2.0分)
A、 in
B、 to
C、 of
D、 with
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答案是：标准答案：B
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– In our English study reading is more important than speaking, I think. – I don’t agree with you. Speaking is ________
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答案是：标准答案：A
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Over a third of the population was estimated to have no _____ to the health service.(本题2.0分)
A、 assessment
B、 assi
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答案是：标准答案：D
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I can’t find _____.(本题2.0分)
A、 a coat enough large
B、 a large enough coat
C、 a large coat enough
D、 an enoug
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答案是：标准答案：B
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He stressed that the disadvantages of the change would _____ its advantages.(本题2.0分)
A、 overtake
B、 outweigh
C、
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答案是：标准答案：B
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The news made the old lady very _____.(本题2.0分)
A、 sadder
B、 sad
C、 sadly
D、 sadness
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答案是：学生答案： B
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11. The accident was _____ to careless driving.(本题2.0分)
A、 for
B、 likely
C、 due
D、 because
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答案是：标准答案：C
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– Hello, may I speak to Mike? – _________________ – Sorry, I must have misdialed.(本题2.0分)
A、 You are wanted on the te
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答案是：标准答案：B
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. Excuse me, it’s urgent I’d like to talk to your manager. – _________________(本题2.0分)
A、 Yes, I’ll make you through
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答案是：标准答案：C
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Excuse me, is this the Sale’s Department? – _________________ – I am so sorry.(本题2.0分)
A、 I’m afraid you have the wro
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答案是：标准答案：A
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– Hello, I’d like to speak to Mr. Wang. – He’s out to lunch now. __________________ – Sure, thank you.(本题2.0分)
A、 Sor
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答案是：标准答案：D
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– Hi, is Thomas there? – _________________(本题2.0分)
A、 No, he is not there.
B、 Sorry, I’ll call him.
C、 Hold on.
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答案是：标准答案：C
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– Hello, may I talk to Jerry? – Sorry, he is out of the office right now. _________________ – Yes, thank you.(本题2.0分)
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答案是：标准答案：D
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– Would you transfer this call to the Financial Department? – _________________(本题2.0分)
A、 Yes, I can’t.
B、 No, so
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答案是：标准答案：C
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– Hello, I need to get in contact with Mr. Fox right away. – __________________(本题2.0分)
A、 What’s the matter, please?
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答案是：标准答案：D
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单选题) – ABC Company, may I help you? – _________________(本题2.0分)
A、 I am Jack. May I speak to Miss Jenny?
B、 This i
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答案是：标准答案：B
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– Hello, may I speak to Mr. Clinton? – _________________(本题2.0分)
A、 Yes, I am Clinton.
B、 Thank you for calling me
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答案是：标准答案：C
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单选题) 设 n维列向量 α= ( 1 2 ,0,⋯,0, 1 2 ) T ，矩阵 A=I−α α T ， B=I+2α α T ，则 AB=(本题4.0分)
A、 0
B、 −I
C、
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答案是：标准答案：C
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单选题) 设 α 1 , α 2 , α 3 ,β,γ 都是4维列向量，且4阶行列式 | α 1 , α 2 , α 3 ,β |=a ， | γ, α 1 , α 2 , α 3 |=b ，则4阶行列式 | α 1 , α 2 , α 3
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答案是：标准答案：C
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若矩阵 [ 1 2 2 −3 ,1 −1 λ −3 ,1 0 2 −3 ] 的秩为2,则 λ的取值为(本题4.0分)
A、 0
B、 -1
C、 2
D、 -3
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答案是：标准答案：C
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已知4阶行列式，下列乘积中是A的展开式中前面取负号的项是(本题4.0分)
A、 blob.png
B、 blob.png
C、 blob.png
D、 blob.png
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答案是：标准答案：C
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若A为5阶方阵且|A|=2，则|－ 2A |= 。(本题4.0分)
A、 4
B、 －4
C、 －64
D、 64
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答案是：标准答案：C
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16. 设A是4阶方阵,且det(A)=4,则det(4A)=( )(本题4.0分)
A、 44
B、 45
C、 46
D、 47
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答案是：标准答案：B
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1375195139004.jpg(本题4.0分)
A、 1375195150754.jpg
B、 1375195160207.jpg
C、 1375195169551.jpg
D、 1375195177629.jp
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答案是：标准答案：D
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设A，B都是n阶可逆 矩阵P使P-1AP=B
A、 相似变换矩阵
B、 相近变换矩阵
C、 相似变换
D、 相近变换
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答案是：标准答案：A
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设A是s×n 矩阵(s≠n),则以下关于矩阵A的叙述正确的是( )(本题4.0分)
A、 ATA是s×s对称矩阵
B、 ATA=AAT
C、 (ATA)T =AAT
D、 AAT是s×s对称矩阵
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答案是：标准答案：D
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单选题) 下列矩阵中,是初等矩阵的为( )(本题4.0分)
A、 上传图片
B、 上传图片
C、 上传图片
D、 上传图片
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答案是：标准答案：C
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设A、B均为n阶可逆矩阵,且上传图片是( )(本题4.0分)
A、 上传图片
B、 上传图片
C、 上传图片
D、 上传图片
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答案是：标准答案：C
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设A为3阶矩阵,A的秩r(A)=3,则矩阵A*的秩r(A*)=( )(本题4.0分)
A、 0
B、 1
C、 2
D、 3
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答案是：标准答案：D
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设A,B是正定矩阵,则( )(本题4.0分)
A、 AB一定是正定矩阵
B、 A+B一定是正定矩阵
C、 (AB)T一定是正定矩阵
D、 A-B一定是负定矩阵
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答案是：标准答案：B
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设向量=(-1,4),=(1,-2),=(3,-8),若有常数a,b使a-b-=0,则( )(本题4.0分)
A、
B、 a=-1,b=2
C、 a=1,b=-2
D、 a=1,b=2
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答案是：标准答案：A
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下列二次型中,为二次型f(x1,x2,x3)=的标准形的是( )(本题4.0分)
A、
B、
C、
D、 "
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答案是：标准答案：A
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设矩阵A=是正定矩阵,则a满足( )(本题4.0分)
A、 a<2
B、 a=2
C、 a=6
D、 a>6"
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答案是：标准答案：A
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矩阵 ( 0 1 1 ?1 2 ,0 1 ?1 ?1 0 ,0 1 3 ?1 4 ,1 1 0 1 ?1 ) 的秩为( )。(本题4.0分)
A、 1
B、 2
C、 3
D、 4"
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答案是：标准答案：C
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维向量组,线性相关的充要条件是( ).(本题4.0分)
A、 ,中任意两个向量的分量对应成比例;
B、 ，中任意两个向量的分量对应成比例；
C、 其中有一个向量是其余向量的线性组合;
D、 其中任意一个向量都是其余向
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答案是：标准答案：C
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设都是阶矩阵且可逆,则下述运算正确的是 ( )(本题4.0分)
A、
B、
C、
D、
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答案是：标准答案：D
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25. 设向量=(-1,4),=(1,-2),=(3,-8),若有常数a,b使a-b-=0,则( )(本题4.0分)
A、
B、 a=-1,b=2
C、 a=1,b=-2
D、 a=1,b=2
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答案是：标准答案：A
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