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问题 选择题

若一个三角形三个内角度数的比为2︰3︰4，那么这个三角形是

A．直角三角形

B．锐角三角形

C．钝角三角形

D．等边三角形

答案

答案：B

三角形内角和为180°，可设角度分别为2X，3X，4X，三者相加等于180度，可解的三个角分别为40°，60°，80°，为锐角三角形，选B

单项选择题

Microsoft’s COM is a software (146) that allows applications to be built from binary software components. COM is the underlying architecture that forms the foundation for higher-level software services, like those provided by OLE. COM defines a binary standard for function calling between components, a way for components to dynamically discover the interfaces implemented by other components, and a mechanism to identify components and their interfaces uniquely.
OLE is a compound (147) standard developed by Microsoft. OLE makes it possible to create (148) with one application and link or embed them in a second application. Embedded objects retain their original format and (149) to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A (150) compound document standard developed mainly by Apple and IBM is called OpenDoc.

A．characteristics

B．address

C．page

D．links
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单项选择题

下列句子中，标点符号使用正确的一句是

A．记忆是—个很难捉摸的东西。有些强迫记忆，即使用，不是丢三落四，就是千呼万唤不出来，有的却是另一种情况，一句偶发的戏语，竟变成“永不消失的电波”。

B．没有意思硬要说，就是瞎说；意思没有想清楚随便说，就是乱说；那都是没有把话说好。

C．有的人可能终生是个谜，但只要他是英雄，不管谜面如何，谜底决然是个“公”字。

D．在黑色的秋夜里，秋虫唧唧，我不知道这是不是因为秋虫有强烈的生命意识抑或是将生命的全部价值隐含在这微弱却令人感泣的绝响里
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