问题
选择题
感受身边的物理--质量为0.2kg的物体可能是（ ）
A．一只羊
B．一只蚂蚁
C．一台电视机
D．一个苹果
答案
A、一只羊的质量大约是50kg，故A不可能；
B、一只蚂蚁的质量远小于0.2kg，故B不可能；
C、一台电视机的质量大约为30kg，故C不可能；
D、一个苹果的质量大约为200g=0.2kg，故D可能；
故选D．
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感受身边的物理--质量为0.2kg的物体可能是（ ）
A．一只羊
B．一只蚂蚁
C．一台电视机
D．一个苹果
A、一只羊的质量大约是50kg，故A不可能；
B、一只蚂蚁的质量远小于0.2kg，故B不可能；
C、一台电视机的质量大约为30kg，故C不可能；
D、一个苹果的质量大约为200g=0.2kg，故D可能；
故选D．
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| From Monday to Friday most people are busy working or studying, and in the evening and weekends they are free and 1______ themselves. Some watch television or go to the movies, and others 2______ sports. This is decided by their own interests. Almost everyone has some kind of hobby. It may be something from collecting stamps to 3______ model planes. Some hobbies are very 4______, but others don't cost anything at all. Some collections are worth a lot of money, others are valuable (有价值的) only 5______ their owners. I know a man who has a coin collection worth several 6______ dollars. A short time ago he bought a rare (罕见的) fifty-cent piece which 7______ him $ 250! On the other hand, my youngest brother collects match boxes. He has almost 600 of them, but I wonder 8______ they are worth any money. 9______, to my brother they are quite valuable. Nothing makes him 10______ than to find a new match box for his collection. That's what a hobby means, I think. It is something we like to do in our free time just for the fun of it. | ||||
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