RC36套具体的问题：一个取非题的问题

天薇凉UID: 3403940

EXE16-12
主要是so...that这个关系怎么理解？
请大家不吝赐教~~~~
When a molten metal or metallic alloy is cooled to a solid, a crystalline structure is formed that depends on the particular alloy composition. In contrast, molten nonmetallic glass-forming materials, when cooled, do not  assume a crystalline structure, but instead retain a structure somewhat like that of the liquid--an amorphous structure. At room temperature, the natural long-term tendency for both types of materials is to assume the crystalline structure. The difference between the two is in the kinetics or rate of formation of the crystalline structure, which is controlled by factors such as the nature of the chemical bonding and the ease with which atoms move relative to each other. Thus, in metals, the kinetics favors rapid formation of a crystal line structure, whereas in nonmetallic glasses the rate of formation is so slow that almost any cooling rate is sufficient to result in an amorphous structure.

12. It can be inferred from the passage that, theoretically, molten nonmetallic glasses assume a crystalline structure rather than an amorphous structure only if they are cooled
(A) very evenly, regardless of the rate
(B) rapidly, followed by gentle heating
(C) extremely slowly
(D) to room temperature
(E) to extremely low temperatures

天薇凉UID: 3403940

robin大版主来解答一下嘛T T

compeUID: 3404227

个人认为选B，
in metals, the kinetics favors rapid formation of a crystal line structure, whereas in nonmetallic glasses the rate of formation is so slow that almost any cooling rate is sufficient to result in an amorphous structure

那么想成晶体就必须要not so slow→rapidly
对吗

希望中的玫瑰UID: 2909568

就是说相对于10 in kinetic or rate of formation crystalline, 15 in kinetic 这种so slow 以致于that几乎任何cooling rate都能形成amorphous structure。 反之，要让15这种东西想成amorphous 之外的相态，需要把现在so slow的条件变化一下

A. very evenly, 原文并没有提到是否even,所以属于无中生有的错误，不选。
B. by gentle heating犯了同上的错误
C. extremely slowly, 恰好是改变了so slow, Bingo！
D. to room temperature, 没有这个条件
E. 同上的错误。

天薇凉UID: 3403940

希望中的玫瑰 发表于 2013-4-10 15:39
就是说相对于10 in kinetic or rate of formation crystalline, 15 in kinetic 这种so slow 以致于that几乎 ...

10和15？什么？

compeUID: 3404227

希望中的玫瑰 发表于 2013-4-10 15:39
就是说相对于10 in kinetic or rate of formation crystalline, 15 in kinetic 这种so slow 以致于that几乎 ...

对的选C，
不过我觉得你的理由不对。你如果说改变一下so slow, rapidly也算是改变。no matter what bring this change.
the natural long-term tendency for both types of materials is to assume the crystalline structure。
这才是原因
long-term tendency.
最后一句的so slow不是说cool so slow，是说rate of formation so slow，那么更需要long-term。

compeUID: 3404227

天薇凉 发表于 2013-4-10 15:44
10和15？什么？

10 和 15 估计是复制的36套原文，把行数带进来了。

天薇凉UID: 3403940

compe 发表于 2013-4-10 15:49
对的选C，
不过我觉得你的理由不对。你如果说改变一下so slow, rapidly也算是改变。no matter what brin ...

对！我懂你的意思啦！！
谢谢！！！
这篇文章真的有点难啊这个理解。怎么处理的啊做的时候？

compeUID: 3404227

天薇凉 发表于 2013-4-10 15:51
对！我懂你的意思啦！！
谢谢！！！
这篇文章真的有点难啊这个理解。怎么处理的啊做的时候？

没练过这套。主要还是读懂吧。
我刚开始选B 就是因为最后一句望文生义，内容没往脑子里面去。。

关键还是要读懂。。。

希望中的玫瑰UID: 2909568

compe 发表于 2013-4-10 15:52
没练过这套。主要还是读懂吧。
我刚开始选B 就是因为最后一句望文生义，内容没往脑子里面去。。

觉得LZ的分析有理!

compeUID: 3404227

希望中的玫瑰 发表于 2013-4-11 12:16
觉得LZ的分析有理!

我不是楼主。。。:funk:

Lena执念UID: 3127648

compe 发表于 2013-4-10 15:49
对的选C，
不过我觉得你的理由不对。你如果说改变一下so slow, rapidly也算是改变。no matter what brin ...

我不懂呀 不是说了不管什么cooling rate都会amorphous麽....
我看到了long tendency那一句，怎么就得出要extremely slowly的结论呢 我疯掉了

compeUID: 3404227

Lena执念 发表于 2013-4-22 23:21
我不懂呀 不是说了不管什么cooling rate都会amorphous麽....
我看到了long tendency那一句，怎么就得出要 ...

哪里不懂
是没读懂还是什么？

Lena执念UID: 3127648

compe 发表于 2013-4-22 23:44
哪里不懂
是没读懂还是什么？

whereas in nonmetallic glasses the rate of formation is so slow that almost any cooling rate is sufficient to result in an amorphous structure.

不是说almost any cooling rate 都会产生无形结构麽？？？

compeUID: 3404227

rate of formation is so slow。这个就是说形成晶体很慢。almost any可能指99.9%。但不是all。如果是all的话。那他题目就不用问了。。