土地结构

地球半径为6.4×10⁶m，银河系的半径为6×10¹⁹m，地球的半径约为银河系的半径的______倍．（保留两位有效数字）

风险滥估的影响因素不包括( )。

A．发行人种类

B．发行人的信用度

C．无风险的国债收益率

D．提前赎回等其他条款

把句子翻译成现代汉语。 

（1）虽乘奔御风，不以疾也。

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（2）清荣峻茂，良多趣味。

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钻孔时一般要采用冷却剂进行冷却，主要是因为（）。

A、金属材料受热膨胀后精度保证不了

B、钻头因发热而失去原有的硬度

C、发热时易灼伤操作者

D、材料会因受热而变硬

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

A. superlinks B. links C. hyperlinksD. connections

A Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with (71) , and that it has a mechanism for (72) graphical files. Display text, display graphics, and (73) hyperlinks ——there’s 99 percent of the (74) value. That’s not to say that the manufacturers didn’t go all - out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can’t wait to delete from your favorites of bookmarks menu Remember when client -side Java applets were supposed to become the preferred (75) , for application development Remember frames and all their nasty side effects