问题 多选题
传感器是把非电学量转换成电学量的一种元件.如图所示,乙、丙是两种常见的电容式传感器,现将乙、丙两种传感器分别接到图甲的电路中进行实验(电流从电流表正接线柱流入时指针向右偏),下列实验现象中正确的是(  )

A.当乙传感器接入电路实验时,若F变小,则电流表指针向右偏转

B.当乙传感器接入电路实验时,若F变大,则电流表指针向右偏转

C.当丙传感器接入电路实验时,若导电溶液深度h变大,则电流表指针向左偏转

D.当丙传感器接入电路实验时,若导电溶液深度h变小,则电流表指针向左偏转

答案

BD

单项选择题
阅读理解

The clock struck eleven at night. The whole house was quiet. Everyone was in bed except me. Under the strong light, I looked sadly before a huge pile of troublesome things they call “books”.

I was going to have my examination the next day. “When can I go to bed?” I asked myself. I didn’t answer, in fact I dared not.

The clock struck 12. “Oh, dear!” I cried, “ten more books to read before I can go to bed!” We pupils are the most wretched(可怜的) creatures in the world. Dad does not agree with me on this. He did not have to work so hard when he was a boy.

The clock struck one. I was quite hopeless now. I forgot all I had learnt. I was too tired to go on. I did the only thing I could. I prayed, “Oh, God, Please help me pass the exam tomorrow. I do promise to work hard afterwards, Amen.” My eyes were heavy, so heavy that I could hardly open them. A few minutes later, with my head on the desk, I fell asleep.

小题1:When the author was going over his lessons, all the others in the house were_____ .

A.asleep

B.working

C.outside

D.watching TV小题2:Reviewing his lessons didn’t help him at all because ____________.

A.he thought it was useless doing this at night

B.his parents were not able to help him

C.his eyes were so heavy that he couldn’t keep them open

D.he hadn’t studied hard before the examination小题3: What do you suppose happened to the author later?

A.He went to a church to pray again

B.He passed the exam by luck

C.He failed in the exam

D.He was punished by his teacher