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【单选题】
下列适合用抽样调查的方式是（ ）A.
为保证“瓦”航空母舰顺利起航，对其零部件进行检查
B.
了解某班学生一零花钱数额
C.
了解重庆电视台“唱红打黑”节目的收视率
D.
调查“故宫展品失窃案”案发两小时内出入展馆人员资料
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【简答题】阅读理解。 Air is all around us. It is around us when we walk and play. From the moment we are born, air surrounds (包围) us. When we sit down, it is around us. When we go to bed, air is also around us. No m...
【简答题】Air is always around us. It is around us when we walk and play. From the time we are born, air is around us. When we sit down, it is around us. When we go to bed, air is also around us. We live in air...
【单选题】Air is all around us. It is around us when we walk and play. From the moment we are born, air surrounds us. When we sit down, it is around us. When we go to bed, air is also around us. No matter where...
A.
a few months
B.
a few weeks
C.
a few days
【单选题】We help our parents when animals are born, and we take care of these animals until they_____.
A.
dying
B.
death
C.
die
【简答题】操作 ; しんせつ ; みせ ; にんき ; 下手 ;
【简答题】Air is all round us．It is around us___ 31_ ___we walk and play．From the time we are born，air is around us on every side．When we sit down，it is around us．When we go to bed．air is 32 around us．We live 3...
【简答题】阅读理解。 Air is all around us. At the time we are born, air is around us everywhere (任何地方). We live in air. All living things need air. Living things cannot live without(没有) air. We can go without food o...
【简答题】Language is a way to communicate with each other. We started to learn language when we were born. However, people are used to speaking their native language, so immigrants are having many problems bet...
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