Cananimalsbemadetoworkforus?Somescientiststhinkthatoned...
问题详情:
Can animals be made to work for us? Some scientists think that one day animals may be taught to do a number of simple jobs. They say that in a film or on TV may see elephants, or monkeys, dogs, bears, or other animals doing a lot of things. If you watch carefully, you may find that those animals are always given something to eat in return(作为回报) for doing them. The scientists say that many different animals may be taught to do a number of simple jobs if they know they will get something to eat in return. Of course, as we know, dogs can be used to guard a house, and elephants can be used to do some heavy jobs. And we can also teach animals to work in factories. Apes(猿猴), for example, have been used in America to help make cars and scientists believe that these large monkeys may one day get in crops(收割庄稼) and even drive trains.
1. Elephants can be used to do some heavy jobs because ____. A. they can eat a lot B. they are very heavy C. they are very strong
2. ____ can be trained to work for us. A. Only a few animals B. A lot of animals C. Few animals
3. Many scientists are working hard to ____. A. make monkeys get in crops and drive trains B. make monkeys guard houses like dogs C. make bears get in crops
4. Many different animals may be taught to do some simple jobs if ____. A. they have enough food to eat
B. they are sent to school
C. they learn they will get something to eat in return after doing them
【回答】
1C 2B 3A 4C
知识点:日常生活类
题型:阅读理解
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已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为 ( ) A.FeO ...
问题详情:已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为()A.FeO B.Fe2O3C.Fe3O4 D.无法判断【回答】B知识点:金属的化学*质题型:选择题...
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如图中,A、B、C、D、E是单质,G、H、I、F是B、C、D、E分别和A形成的二元化合物,已知:①反应C+G ...
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某有机物结构简式为,下列关于该有机物的说法中不正确的是( )A.遇FeCl3溶液显紫*B.与足量的*氧化*溶...
问题详情:某有机物结构简式为,下列关于该有机物的说法中不正确的是()A.遇FeCl3溶液显紫*B.与足量的*氧化*溶液在一定条件下反应,最多消耗NaOH3molC.能发生缩聚反应和加聚反应D.1mol该有机物与溴发生加成反应,最多消耗1molBr2【回答】解析A项,有机物分子中存在*羟基,所以...
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Chinahasbeenpushingthereformofpublichospitals_______al...
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