完形填空：Jenny works hard every day. After work,

题目：

Jenny works hard every day. After work, she spends much time 1 housework for her family. She always has 2 things to do. Her husband(丈夫) works in a radio station.He is never late 3 work. 4 the radio station , he takes the number 109 bus . He is busy every day.There 5 a son and three daughters in Jenny’s family. They are not 6 in the same school. They go to school 7 bike on school days.They study very 8 . On weekends, Jenny takes them to some nice 9 to eat different kinds of delicious food. She also takes them to the zoo . They love most animals because they think they’re interesting. But her son doesn’t like tigers .He thinks they’re 10 scary. Jenny has a happy family.

小题1:

A．do

B．to do

C．doing

D．on doing

小题2:

A．many

B．much

C．a lot

D．a lots of

小题3:

A．to

B．it

C．for

D．with

小题4:

A．Get

B．To get

C．To get to

D．Getting to

小题5:

A．is

B．are

C．have

D．has

小题6:

A．study

B．going

C．studying

D．go

小题7:

A．with

B．on

C．in

D．by

小题8:

A．good

B．well

C．bad

D．nice

小题9:

A．parks

B．restaurants

C．banks

D．offices

小题10:

A．kinds of

B．a kind of

C．all kinds of

D．kind of

答案：

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下面是错误答案，用来干扰机器的。

∵f（x）=（2x-3）ex，∴f（1）=-e故切点坐标为（1，-e）f′（x）=2ex+（2x-3）ex=（2x-1）ex∴f′（1）=e即切线的斜率为e∴曲线f（x）=（2x-3）ex在点（1，f（1））处的切线方程为y-（-e）=e（x-1）即y=ex-2e故答案为：y=ex-2e