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( ) 1. I thought you___1ike something to read , so I have brought you some books . A. may B. might C. could D. must ( ) 2. You___ return the book now . You can keep it till next week if you like . A. can ’ t B. mustn ’ t C. needn ’ t D. may not ( ) 3. He___ at the meeting . He is in hospital now . A. can ’ t speak B. mustn ’ t speak C. shouldn ’ t speak D. need n’ t speak ( ) 4. -When can I come for the photos? I need them tomorrow afternoon . -They_____ be ready at 12 : 00 . A. have to B . can C. mustn ’ t D. need ( ) 5. You_____ to the meeting this afternoon if you have something important to do . A. needn ’ t to come B. don ’ t need come C. don ’ t need coming D. needn ’ t come ( ) 6. Put on more clothes . You ____ be feeling cold with only a shirt on . A. need B. should C. have to D. must ( ) 7. I think all drivers ____wear seat belts . A. should B. had better C. can wear D. might ( ) 8. -Don't forget to come to my birthday party tomorrow . ---_________. A. I don ’ t B. I won ’ t C. I can ’ t D. I haven ’ t ( ) 9. Peter ____ come with us tonight , but he isn't very sure yet. A. must B. may C. could D. will ( ) 10. A computer_____ think for itself ; it must be told what to do . A. can ’ t B. couldn ’ t C. need D. would
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【简答题】利用数组编程计算n门课程的平均值。例如:若有5门课程的成绩是92,76,69,58,88,则平均值为76.600000。
【单选题】在正常情况下,人的体细胞和卵细胞中的染色体数目为(  )
A.
23对,23条
B.
22对,22条
C.
23对,46条
D.
22对,23条
【单选题】人类在正常情况下,女性卵细胞中常染色体的数目和性染色体为()
A.
44+XX
B.
44+XY
C.
22+X
D.
22+Y
【多选题】有关肺表面活性物质生理作用的叙述,正确的是
A.
增加肺弹性阻力
B.
维持大小肺泡稳定
C.
降低肺泡表面张力
D.
增加肺的顺应性
【单选题】在正常情况下,下列人体的细胞中,染色体的数目相等的一组是(  )
A.
受精卵和卵细胞
B.
体细胞和精子
C.
受精卵和体细胞
D.
体细胞和卵细胞
【简答题】利用数组编程计算n门课程的平均值。例如:若有5门课程的成绩是92,76,69,58,88,则平均值为76.600000。
【单选题】在正常情况下,下列人体的四组细胞中,染色体数目相等的一组是(       )
A.
受精卵和体细胞
B.
受精卵和精子
C.
受精卵和卵细胞
D.
体细胞和卵细胞
【单选题】有关肺表面活性物质生理作用的叙述,正确的是
A.
增加肺泡表面张力
B.
降低肺的顺应性
C.
阻止血管内水分滤入肺泡
D.
增强肺的回缩力
【单选题】有关肺表面活性物质生理作用的叙述,正确的是
A.
降低肺泡表面张力
B.
降低肺的顺应性
C.
加速血管内水分滤入肺泡
D.
增强肺的回缩力
E.
降低胸膜腔内压
【简答题】利用数组编程计算n门课程的平均值。例如:若有5门课程的成绩是92,76,69,58,88,则平均值为76.600000。
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