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问题 选择题

下列各句中加点的成语的使用，恰当的一句是：         (          )

A．印度洋海啸发生后，我校同学纷纷向灾区人民伸出援助之手，你五十，我一百，二一添作五，不到一个月，就捐出了近万元。

B．今年全国报考研究生人数达到了29.2万人，这叹为观止的数字雄辩地证明了知识的价值。

C．孤树不成林，诗歌发展到《诗经》时代，有了琴瑟的伴奏，才真正进入了发展的良好轨道。

D．世界上大凡秀色可餐的城市，不少是傍水而建的，这座一派江南情调的“高原姑苏”——古城丽江，一身的风韵就是一个“水”字!

答案

答案：D

(A .二一添作五：指双方平分。B“叹为观止”：赞美看到的事物好到极点。该句用来形容人数多，不恰当。C．孤树不成林比喻人单力薄。D“秀色可餐”：形容妇女的美貌，后也形容花木、山林的秀丽。

单项选择题

8255A端口C按位置位/复位控制字的()位用来指定要置位或复位的端口C的具体位置。

A．D4、D5、D6

B．D1、D2、D3

C．D0、D1、D2

D．D5、D6、D7
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单项选择题

A total of 4.6 million digital televisions have been sold, and the sales of HDTV sets have quadrupled since last year. Consumers have bought HDTVs to play their DVDs and to have clearer pictures and wide screens. Only a small percentage of the people who have purchased HDTVs, however, have actually hooked their TVs up to receive high-definition television digital signals. Perhaps television viewers are having trouble keeping up with the changes in technology. Even the manufacturers of HDTVs, like Mitsubishi, Thomson Multimedia, Sony, and Samsung seem to have a tough time learning how to make their sets work with the various digital TV formats because little standardization has been required or implemented in the industry.

Some of the HDTVs weigh over 200 lbs., and a variety of retailers offer a delivery service to the buyer’s home to help install the heavy sets. This is known as a white-glove service and usually comes with an extra fee. After HDTV purchasers get their sets home and hook them up, they will still need to work to get the digital signals to their systems. Most of the industry’s cable providers do not yet offer high~definition programing, and only about 15% of commercial television stations have switched over to even the lowest improved digital pictures. Worse yet, viewers may need to install antenna before they can even get the digital signals to their new HDTV sets. Another frustration for home-theater seekers is that the current HDTV sets allow owners only to watch high-definition programs, not to record them.

According to the first sentence, the sales of HDTV sets since last year, by the time when this article was written, had reached ().

A. 4.6 million

B. 9.2 million

C. 18.4 million

D. I do not know how many
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