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【判断题】
热敏电阻的温度系数随温度减小而减小，所以低温时热敏电阻温度系数小，灵敏度高，故热敏电阻常用于低温测量。A.
正确
B.
错误
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【单选题】What did the teacher say to you just now? She asked _________.
A.
where did I learn English
B.
where I learned English
C.
where do I learn English
D.
where I learn English
【单选题】—_____ did you begin to learn the violin? —At the age of 5. [ ]
A.
Why
B.
When
C.
How
D.
What
【单选题】The most important thing is _________ A． what do you learn B． what did you learnC．
A.
10． The most important thing is _________ A． what do you learn
B.
what did you learn
C.
what you have learn
D.
what you learnt
【简答题】选择合适的答语。 ( ) 1. What did you do yesterday? ( ) 2. Did Mary learn Chinese? ( ) 3. What is she doing? ( ) 4. Who are they? ( ) 5. Is this your grandma? ( ) 6. How was it differen...
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