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问题 单项选择题

Windows 98操作系统中引入线程概念后，可以提高进程内程序执行的并发性。在下列有关Windows 98线程的叙述中，错误的是

A．线程也称为“轻量级进程”，它表示进程中的一个控制点和一条执行途径

B．Win 32应用程序通常是多线程的，如Microsoft Word软件

C．利用Windows 98提供的“系统监视器”可以查看当前系统中线程的数目

D．线程是存储器、外设等资源的分配单位，也是处理器调度的对象

答案

参考答案：D

解析： 该题考查考生对Windows 98操作系统线程的理解。为了提高进程内的并发性，进一步提高处理器的利用率，Windows 98引入了线程的概念，把线程作为处理器调度的对象，而把进程作为资源分配的单位，所以选项D是错误的，其他三个选项都是对Windows 98线程的正确描述，所以应该选择D。

单项选择题

动力室主要安装（）及其附属系统。

A、空气压缩机

B、预热锅炉

C、柴油机

D、液传箱
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填空题

You might think that hamburgers were invented in the United States, but that is not totally true. These (1) , or patties, actually came from Germany in the middle of the nineteenth century. They were brought to the United States by (2) who came from the city of Hamburg. That is why (3) was "hamburger steak".

However, people in other places (4) that they invented the hamburger. Perhaps we’ll never have a (5) . But there’s no question that the hamburger was a (6) . Why Perhaps because at that time, industry was growing and a kind of (7) food was needed for workers.

The hamburger became even more popular (8) when the first chain of fast food restaurants was started. This chain was called "White Castle". It served tiny hamburgers that were sold for only (9) . Then, in the 1930s there came the (10) where customers were served in their cars by waiters in uniform. And the hamburger was one of the most (11) .

By now, The hamburger was ready to (12) the world. And this happened with McDonald’s, which was actually a (13) at first. But by the early 1950s the hot dog was replaced by the hamburger. McDonald’s and other fast food restaurants (14) around the world throughout the rest of the twentieth century. McDonald’s alone has (15) for everyone person in the world.

The importance of the hamburger to (16) remains significant. About (17) of all sandwiches that are eaten are hamburgers. According to some sources, (18) of current workers in the United States had their first job at McDonald’s. But the face of the hamburger is changing (19) . Nowadays it is possible to buy a chicken burger, a turkey burger, (20) , or veggie burger.

13（）
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