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【单选题】
要产生 [20 , 999] 之间的随机整数使用哪个表达式?A.
(int)(20+Math.random()*979)
B.
20+(int)(Math.random()*980)
C.
(int)Math.random()*999
D.
20+(int)Math.random()*980
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反馈参考答案：
举一反三
【简答题】Spanning the novels is Cha's great theme, Chinese i___14___。
【简答题】A．He is working hard all the time. B．He is lazy all the time. C．He works hard so as to get his three meals. D．He often has his three meals on time.
【简答题】基本RS 触发器由 ( ) 个与非门的输入端与输出端交叉连接而成。基本RS 触发器 有( )、( )、( )三种功能。
【单选题】He is working hard for fear that he __.
A.
should fall behind
B.
fell behind
C.
may fall behind
D.
would fallen behind
【简答题】电力二极管的基本工作原理为____,常见的电力二极管主要有____、____、____。
【单选题】Because he is working hard, he has been to the position of department manager.
A.
promoted
B.
presented
C.
probably
D.
pleased
【判断题】诗体小说《叶甫盖尼·奥涅金》是普希金最重要的作品，小说以贵族青年奥涅金和塔吉雅娜的恋爱故事为情节线索。小说主人公奥涅金是俄国文学史上第二个“多余人”的形象。()
A.
正确
B.
错误
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