氟泰[氟化钠（NaF）、二氧化硅]是牙膏的主要成分，其作用不仅能帮助防止牙齿表面

第三节完形填空(共20小题；每小题1.5分，满分30分)

阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Nick was not the kind of boy I had expected to spend my summer with. I was hoping to have a   21   the summer before my busy senior year, but my mother asked me to do her a  22  . One of her colleagues needed a full-time   23  . “You planned to volunteer at the local hospital, why not volunteer to   24   Nick instead?” Then she told me that this six-year-old boy was not a   25   child.

Nick was a lovely little boy who suffered from many disorders. Normal day-care centers would not   26   him. As a baby, he had serious ear infections which left him with equilibrium (平衡) problems. He couldn’t   27   or run properly. I was hesitating (犹豫)   28   I was to take the job when my mother   29  , “Don’t you want to be a nurse in the future? I doubt if you even have the   30  .”

Then I told her I was   31  for the job.

The day started at 7:00 a.m. Nick was my wake-up call! With so much energy and very little   32  , he was quite a mix.

At the park, when he saw all the other children play on the jungle gym and swings (秋千)， the boy’s face   33   up — How he wished he belonged to the group of his age! You would think it would be   34   to get a child to go down a slide (滑梯). Believe me, it wasn’t !  It took time, a lot of time. But with patience and support, Nick took one step up the slide each day. We worked together to face his   35   and gradually he got closer to taking the slide of his life.

Halfway through the summer, he   36   it to the top of the slide. With my arms   37    him tightly, we flew down the slide! I waited for his reaction. After realizing that he was safe and sound, he gave me a big   38   and asked, “May I go down again, alone?”

I had never been happier in my life when I saw this little child climb the ladder and enjoy what other children   39   for granted.

This   40   child taught me that being a nurse means respect, kindness and patience.

21. A. grade                    B. course                   C. project                  D. relaxation

22. A. service         B. favour               C. business              D. trade

23. A. nurse            B. waitress              C. guard                 D. guide

24. A. protect          B. defend               C. attend               D. comfort

25. A. normal                B. naughty              C. clever             D. happy

26. A. admit            B. receive              C. accept              D. adopt

27. A. speak           B. play                   C. stand               D. walk

28. A. if                  B. what                C. why              D. where

29. A. suggested         B. argued               C. challenged          D. commented

30. A. energy           B. courage              C. faith                           D. time

31. A. eager            B. sorry                C. grateful            D. ready

32. A. awareness        B. balance               C. knowledge         D. control

33. A. delighted       B. cheered               C. lit                D. shut

34. A. difficult        B. simple               C. interesting          D. terrible

35. A. fears            B. worries              C. chances            D. situations

36. A. climbed          B. got                        C. managed           D. made

37. A. taking          B. holding              C. bringing          D. greeting

38. A. kiss            B. clap                 C. welcome           D. surprise

39. A. play            B. do                  C. take              D. enjoy

40. A. miserable        B. smart                C. brave             D. special

10kV的电力电缆，长度在500m及以下，在电缆温度为20℃时，阻值不应低于（）MΩ。

A.10；

B.15；

C.200；

D.400。

变压器的（）影响变压器的效率、温升和使用寿命。

A、电流

B、电压

C、损耗

D、频率

房地产转让的实质是( )发生转移。

A．房地产使用权
B．房地产权益构成
C．房地产权属
D．房地产实体状况

蒂痕