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问题 选择题

下列计算正确的是[ ]

A.（-4x2）（2x2+3x-1）=-8x4-12x2-4x

B.（x+y）（x2+y2）=x3+y3

C.（-4a-1）（4a-1）=1-16a2

D.（x-2y）2=x2-2xy+4y2

答案

C

听力题

根据句意用所给词的适当形式填空（10分）

小题1:Mr. Green uses a lot of games in his ___________.(teach )

小题2:My uncle _________(dead) three years ago.

小题3:She _______(forget) to turn off the light when she left the room.

小题4:We can see many_______________( farm) working on the farm..

小题5:France is in _______________(west) Europe.

小题6:We can learn many_____________things about the tower if we listen to the guide carefully.(interest)

小题7:The cat is so small, and we should take good__________(careful) of it.

小题8:My mother often encourages me ____________(study) hard and enter a famous university.

小题9:The statue(雕像)is in the______________(central) of the park.

小题10:The rich man donated( 捐赠 )a lot of money. The___________(receive) are from the poor countryside.
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单项选择题

骑跨伤最常见的泌尿系并发症为

A． * * 外口狭窄
B． * * 膜部损伤
C． * * 假道形成
D． * * 内口狭窄
E． * * 球部损伤
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