问题
填空题
均匀的固体样品如奶粉，同一批号的产品，采样次数可按（）（填公式）决定，所以，200袋面粉采样（）次。
答案
参考答案：S=IN/2；10
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均匀的固体样品如奶粉，同一批号的产品，采样次数可按（）（填公式）决定，所以，200袋面粉采样（）次。
参考答案：S=IN/2；10
| 完型填空。 | ||||
| Mrs. Green __1__ shopping every Sunday. Sometimes she buys food __2__ the family, sometimes she buys __3__. She __4__ buying cheap things. Her child Jane likes to go __5__ very much. Every Sunday she goes to __6__ shops. She likes going __7__ her friend Mary. They sometimes buy things. But some- times they __8__ buy anything (任  何东西). They only look __9__ things in the shops. That makes __10__very happy. | ||||
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