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【单选题】
下列各项属于社区试验的主要特征的是A.
常用于预防性制剂或方法的评价
B.
以人群为整体确定试验分组
C.
以个体为单位确定试验分组
D.
常用于治疗药物或方法的评价
E.
以上均不正确
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【简答题】2 Supply the missing word in each definition. 1 After-__________ service is the help people get from the shop where they have bought a product. 2 The __________ street is the street of a town wh...
【简答题】阅读理解。 In Western countries people have been using the installment plan since the first half of the twentieth century. Today, a large number of families in Great Britain buy furniture, household goods ...
【简答题】何谓贸易术语?请简述其在国际贸易中的作用。
【单选题】_____ number of people have bought the newly album of Richard Marks,but I didn ’ t know _____ exact number of them.
A.
The,a
B.
A,the
C.
The,the
D.
A,an
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