紫外成像仪常采用的紫外线波长范围在（）之间。 A.240nm-280nm B.0.7_爱下问搜题

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问题单项选择题

紫外成像仪常采用的紫外线波长范围在（）之间。

A.240nm-280nm

B.0.75μm-1000μm

C.2μm-14μm

D.10nm-400nm

答案

参考答案：A

阅读理解

完形填空。

     Nick is a 14-year-old school boy. His life is full of exams and studies on weekday. He has  1 free time.
He thinks playing computer games  2 the best way to make him relax. When he has free time, he sits in front
of the computer. Just  3   that way, he doesn't eat or drink for several hours.
     Last weekend, he played games on the computer again. He was too  4 and didn't want to move. He didn't
have  5 for six hours. When he had to go to the bathroom, he found he could not move. He  6 to the hospital.
The doctor told him he should have a good rest and  7 exercise.
    After coming back from the hospital. Nick follows the doctor's 8 . He often plays soccer with his friends.
9 sometimes he still plays computer games on weekends, he  10 does it for long. Now he lives a happy and
healthy life.

( )1. A. few
( )2. A. is
( )3. A. on
( )4. A. excite
( )5. A. something
( )6. A. is taken
( )7. A. pay attention to
( )8. A. dreams
( )9. A. Unless
( )10. A. ever

B. a few
B. are
B. for
B. excites
B. anything
B. was taken
B. paid attention to
B. advices
B. And
B. often

C. much
C. be
C. like
C. exciting
C. nothing
C. was taking
C. take care of
C. advice
C. Because
C. never

D. little
D. was
D. since
D. excited
D. everything
D. took
D. take out
D. hobbies
D. Although
D. always

填空题

砖砌地下室内、外墙，其内外墙身与基础的工程量以（）为界分别计算。