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【单选题】
近年来,人们越来越关注疫苗的安全问题,下列对疫苗的叙述错误的是( )A.
接种疫苗的目的是为了保护易感人群
B.
接种疫苗可以使人获得特异性免疫
C.
接种疫苗可以治疗疾病
D.
疫苗通常是用杀死的或减毒的病原体制成的生物制剂
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【单选题】This math question is too difficult. Can you help me ?
A.
work on it
B.
work out it
C.
work it out
D.
work for it
【简答题】A.Play in a band. B.Work at the auction. C.Serve refreshments. D.Collect tickets.
【单选题】To do some voluntary work for the 2nd Youth Olympic Games is ______ excellent chance for us to serve our hometown—Nanjing.
A.
a
B.
an
C.
the
D.
不填
【简答题】生物膜法污水处理系统,在微生物相方面和处理工艺方面有哪些特征?
【简答题】凯撒大帝甚至规定 为罗马皇室专用色。
【简答题】凯撒大帝甚至规定 为罗马皇室专用色。
【单选题】____ you work, you must always serve the people heart and soul.
A.
Wherever
B.
Whenever
C.
Where
D.
When
【简答题】凯撒大帝甚至规定 为罗马皇室专用色。
【单选题】The 13 measures of psychological well-being are used to ______.
A.
serve as the standards for choosing the subjects of the research
B.
serve as the ways to help adults to get over their unhappy marriage
C.
examine all the 5232 married adults
D.
examine all the adults in the database
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