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【简答题】
编写程序,从键盘上输入一个整数,判断是否是正数。
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反馈参考答案：
举一反三
【单选题】Most Navigation Systems are ( ) from the bridge, a unique location that allows for a centralized, safe and efficient management of ship navigation.
A.
restricted
B.
far away
C.
accessible
D.
deterred
【简答题】Why does the author describe Charles Winget and his wife in the first paragraph?
【简答题】How would behavioral scientists explain the differences between Charles Winget and his wife?
【判断题】Winget and his wife have developed a approach to help a person to recognize his body’s patterns.
A.
正确
B.
错误
【多选题】对非整倍体变异描述正确的有
A.
体细胞中的染色体数目增加或减少一条或几条的现象
B.
是临床上最常见的染色体畸变类型
C.
常染色体的单体型严重破坏基因平衡,因而是致死的,但X染色体单体型的女性可见于儿童或成人
D.
常染色体三体型多导致流产(21、13、18三体型除外),性染色体三体型较常见
【判断题】The differences between Charles Winget and his wife were caused by personal eccentricities or early conditioning.
A.
正确
B.
错误
【判断题】Early in the morning Winget and his wife wake up together and are eager to begin the day’s work. (Para. 1)
A.
正确
B.
错误
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