更新~又2道陈向东书里的题~大全里没找到~在6.7楼~没有人会么~

blueice

It has been hypothesized that much of the matter in the universe is "dark", i.e.,unseen. Studies have shown that galaxies in many galaxy clusters are moving faster with respect to one another than they would if visible stars constituted all their mass. The studies suggest that the galaxies are moving under the gravitational influence of unseen mass in consider able quantity.

which of the following is an assumption underlying the passage above?

a)Measurements of the speed of moving galaxies are extremely unreliable.

b)the workings of gravitational forces are not particularly well understood.

c)The aggregate mass of visible stars in the galaxies mentioned above can be estimated with some confidences.

d)The general composition of unseen matter in the universe has been determined.

e)Without exception, the galacies mentioned above move toward one another.

答案是c,我完全没思路阿~~~请教下大家  谢谢了

[此贴子已经被作者于2007-4-15 12:09:31编辑过]

soniashi

if visible stars constituted all their mass

说明科学家能算出C

所以得出结论

The studies suggest that the galaxies are moving under the gravitational influence of unseen mass in consider able quantity

blueice

以下是引用soniashi在2007-4-11 17:22:00的发言：

if visible stars constituted all their mass

说明科学家能算出C

所以得出结论

The studies suggest that the galaxies are moving under the gravitational influence of unseen mass in consider able quantity

这个地方的their  mass   值得应该是前面的galaxies clusters吧？

如果是这样的话就不怎么对阿~~

soniashi

对阿

这个地方的their  mass的确是前面的galaxies clusters

翻译：如果闪亮的星星（的质量）能代表整个星系的质量

所以，如果科学家不知道闪亮的星星的质量，怎么能这么说呢？

blueice

明白了~~谢谢~

blueice

2.The workers at Bell Manufacturing will shrotly go on strike unless the management increase their wages. As Bell's president is well aware, however, in order to increase the workers' wages, Bell would have to sell off some of its subsidiaries. So, some of  Bell's subsidiaries will be sold.

The conclusion above is properly drawn if which one of the following is assumed?

A.Bell Manufacturing will begin to suffer increased losses.

B.Bell's management will refuse to increase its workers' wages.

C.The workers at Bell Manufacturing will nor be going on strike.

D.Bell's president has the authority to offer the workers their deseired wage increase.

E.Bell's workers will not accept a pakage of improved benefits in place of their desired wage increase.

The answer is C.

可是这是一道假设~不是infer阿~不罢工怎么会是卖掉子公司的假设呢？应该是推论猜对阿？

请教NN

blueice

这题用中文~

3。要断定一个新的概念，例如：私人化，这个概念能躲开在公众中占据一席之地的一个缺低能的办法就是观察代表这个概念的单词或短语多快能变成一种习惯用方法。关于短语是否确实已被认为变成了一种习惯用法可以从字典编辑那里得到专业的意见，他们对这个问题非常地关心。

上面描述的断定一个新概念能否很快被公众接受的办法以来与下面那个假设？

答案是：当一个单词转变成一种习惯用法时，它的意思在转变的过程中不会经过任何严重的歪曲。

我看不出哪来的假设阿？？

[此贴子已经被作者于2007-4-14 11:59:40编辑过]

blueice

没有人来帮帮忙么~~

blueice

up~~~~