三道语法题！

dct

1.

Changes within the (chemist) structure of the single gemes may be induced by exposure to radiation and extreme temperatures.

请问chemist应该怎么改呢？

2.

In the nineteenth century, north American locomotives ran on hardwood fuel, which was inexpensive and plentiful (in) the time.

in 是不是要改为during？

3.

Globally,( the) 1990s stood (out) as the (warmest) decade for (what) we have weather records.

what为什么错了？应该怎么改？

恳请指教，谢谢！！！

another

为了方便解答与搜索，所以麻烦楼主能按照

【发贴必读】----《语法区版规》提问格式说明★http://forum.chasedream.com/dispbbs.asp?boardID=58&ID=83887&page=1

修改一下标题，谢谢合作哟^_^

consonant

1,chemist->chemical

2,->at the time

3,what->which

dct

多谢上面那位仁兄，谢谢，谢谢！！！

dct

以下是引用another在2005-5-1 11:40:00的发言：

为了方便解答与搜索，所以麻烦楼主能按照

【发贴必读】----《语法区版规》提问格式说明★http://forum.chasedream.com/dispbbs.asp?boardID=58&ID=83887&page=1

修改一下标题，谢谢合作哟^_^

呵呵，不好意思哦，我也知道这里的规矩，可是我做的题目是练习题，没有写是哪一年的。所以请多多见谅哈！！

another

唔唔，了解啦，米有关系。