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【单选题】
Some blood types are quite common, others are regionally , and still others are rare everywhere.A.
distributed
B.
contributed
C.
obtained
D.
Convinced
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举一反三
【单选题】Which of the following statements is NOT true about the general election?
A.
During the general election, Americans cast their votes.
B.
The votes in the general election determine the final winner.
C.
The general election is often referred to as midterm election, or indirect election.
D.
The general election is the 3 rd step in the presidential election in the United States.
【简答题】某幼儿园有幼儿 450名,2个月内确诊手足口病的儿童60例。请选择一个合适的疾病描述指标,并计算。
【简答题】某幼儿园有幼儿 450 名, 2 个月内确诊 / 疑似手足口病的儿童 60 例,请问手足口病罹患率?
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