According to the first paragraph, what evidence is there that crows have interested people for a long time
A. The large number of stories about crows.
B. The frequency with which crows are sighted.
C. The amount of research that has been conducted on crows.
D. The ease with which crows are identified.
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The outdated methods of dealing with garbage are now considered unacceptable because of______.
A. lower efficiency
B. water shortage
C. limited space
D. higher risk
企业必须按期缴纳生育保险费。对逾期不缴纳的，按日加收( )的滞纳金。
A. 1‰
B. 2‰
C. 3‰
D. 4‰
Jim: Could you please tell me whether the dining car is still open Helen: ______. Jim: Thank you.
A. Never mind, it is still open
B. My pleasure, it is closed five minutes ago
C. I'm afraid it closed five minutes ago
D. I'm sorry, I don't know
窗口有两种类型，下列描述中对两类窗口描述有错误的是( )。
A. 应用程序窗口和文档窗口是WINDOWS所指的两类窗口
B. 不同类型的窗口均出现在屏幕上
C. 文档窗口是出现在应用程序窗口内的一个窗口
D. 文档窗口有菜单，而应用程序窗口无菜单
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