皮皮学，免费搜题
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【简答题】
听短文,选择正确答案。 1. How old is Miss Li? A.Twenty. B.Thirty-three. C.Twenty-three.? 2. Which floor does Miss Li live on? A. Eighth floor. B. Eightieth floor. C. Eighteenth floor. 3. What time does she leave her home every day? A . At eight. B. At half past seven. C. At half past eight. 4. How far is her bookshop from her building? A. A hundred metres. B. A hundred kilometres. C. Fifty metres. 5. Why do the children like her? A. Because she often gives them books. B. Because she often tells them stories. C. Because she often takes them to the shop.
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【简答题】根据码字所含码元个数,编码可分为 编码和 编码 .
【单选题】The author called Wikipedia 'people's encyclopedia' because
A.
it is accessible to all the passers-by.
B.
it can be edited by everyone.
C.
it is run by ordinary people.
D.
it is built to the taste of common citizens.
【多选题】关于统计学研究中的抽样误差,描述正确的有
A.
是不可以避免的
B.
可以通过测量前的仪器校正、方法统一等方法来防止
C.
通过增大样本量可以使之减小
D.
通过多次测量可以使之减小
【简答题】Wikipedia defines 'gene therapy' as: "An experimental technique that uses genes to treat or pr disease. It targets the ______________ responsible for genetic diseases."
【简答题】我国引起慢性肾衰竭最常见的病因是( )
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