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问题 默写题

补写出下列名篇名句中的空缺部分。

（1）生亦我所欲也；义亦我所欲也。______________，舍生而取义者也。（孟子《鱼我所欲也》）

（2）长风破浪会有时，______________。（李白《行路难》）

（3）______________，病树前头万木春。（刘禹锡《酬乐天扬州初逢席上见赠》）

（4）小楼昨夜又东风，______________。（李煜《虞美人》）

（5）千呼万唤始出来，______________。（白居易《琵琶行》）

（6）______________，用之如泥沙？（杜牧《阿房宫赋》）

答案

（1）二者不可得兼

（2）直挂云帆济沧海

（3）沉舟侧畔千帆过

（4）故国不堪回首月明中

（5）犹抱琵琶半遮面

（6）奈何取之尽锱铢

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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单项选择题

化学需氧量是指在一定条件下，氧化11水样中还原性物质所消耗的氧化剂的量，以mg/L表示。计算公式为CODCr（O2，mg/L）=（V0—V1）C×8×1000/V，其中数字8的取值原因是（）。

A.计算过程的校对系数

B.没有特别对应关系，只是换算为以氧的mg/L表示

C.1mol硫酸亚铁铵相当于（1/2）氧的摩尔质量

D.反应式的比例关系
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