问题
选择题
在如图所示的电路中，正确的电路组成是（ ）
A．
B．
C．
D．
答案
电路的四个基本组成部分是：电源、用电器、开关和导线．
A图没有用电器，不正确；B图是短路，不正确；C图符合电路的组成，正确．D图无电源，不正确．
故选C．
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在如图所示的电路中，正确的电路组成是（ ）
A．
B．
C．
D．
电路的四个基本组成部分是：电源、用电器、开关和导线．
A图没有用电器，不正确；B图是短路，不正确；C图符合电路的组成，正确．D图无电源，不正确．
故选C．
I’m a middle school student. In the past, I had some bad .I hardly had breakfast I usually got up late. I didn’t like exercising. I ____ exercised one to two times a month. In the evening, I always watched TV more than two hours. Then I _ the Internet.. I liked to play computer games. So I often stayed up late. My parents thought（认为） staying up late was bad for my health, so they were not __ __ with that. One day, I fainted(昏倒)in a P.E.class. When I _ , I was in the hospital. The doctor said that my classmates sent(送) __ __ there. He said that I was in poor (差的) __ _ . Then he told me to eat breakfast every day and do more exercise. From then on, I _ _ to give up (戒掉) my bad habits. Now I usually get up early and have a good breakfast. After school, I always play sports with my friends. It’s fun and good for my health.
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