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4.直线上有ABC三点,如果B分有向线段AC的比为-,则

A.B是线段AC的中点

B.A是线段BC的中点

C.C是线段AB的中点

D.B是线段AC的三等分点

答案:B

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3.tanx=2,则的值是(  )

A.          B.          C.          D.

答案:C

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2.如果αβ都是第二象限的角,且αβ,那么sinα与sinβ的大小关系是

A.sinα>sinβ                 B.sinα<sinβ

C.sinα=sinβ                 D.大小关系不定

答案:D

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1.已知:abc为三个向量,下列命题中正确的是

A.如果|a|=|b|,那么ab

B.abba

C.|a+b|≤|a|+| b |

D.(a·bca·(b·c)

答案:C

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100.My boys! You are too shy. You should have more confidence in ______.

 A. you   B. yourselves   C. yourself   D. themselves

1-5CBDAA 6-10AACAB 11-15ACACA 16-20DBDBB 21-25CCCDD 26-30ADAAC  35-40BACBC  41-45BBDBD 46-50CABCA  51-55DCACD    56-60ACAAC   61-65DADAA

66-70BCCAC  71-75ADCCA    76-80CBBCA    81-85CDCDA

86-90DDBBB  91-95BABBD    96-100BCCAB

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98.--Do you know Jim quarreled with his wife?  

--I don’t know.  _____.

 A.I don’t care also  B. So do I   C. Neither do I   D. too

gratulations _____ you _____winning the competition!

 A. to, on  B. for, for  C. for, on   D. to, on

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97.Tom hasn’t phoned us for a long time. What do you suppose _____ to him?

 A. was happening   B. to happen   C. has happened   D. happened

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96.Look______! There’s a train coming.

 A. at   B. out   C. around   D. over

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95.His wife died and ______ him nothing but two sons.

 A. offered    B. gave   C. sent   D. left

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94.It takes my daughter about an hour to practice playing _____piano after ____ supper every day.

 A. the, the  B. the, /   C. /, /  D. /, the

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