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【简答题】
一个结构化的算法是由( )结构、选择结构和循环结构这些基本结构组成的。
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举一反三
【简答题】哪种寄生虫感染宿主后,宿主既是它的中间宿主、又是它的终末宿主。先为终末宿主,后为中间宿主。A. 旋毛虫 B. 日本血吸虫 C. 弓形虫 D. 华枝睾吸虫
【简答题】以下哪些内容需要包含在研究实施方案中A. 抽样实施B. 问卷编写C. 调查执行D. 分析方法E. 质量评估
【单选题】Peter Paul
A.
Overfishing results from extensive use of new technologies．
B.
Many people in my place support stricter regulation on fishing．
C.
I think that you failed to point out the real reason for overfishing．
D.
We are in a very weak position to compete with other countdes in fishing．
E.
Sooner or later，we will feel regretful about out current fishing practice．
F.
I didn’t know there were such damaging ways of fishing around the world．
G.
I wonder if those fishermen have ever considered the consequences of exhausting ocean resources．
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