prep127以及一些指代问题

1。After decreasing steadily in the mid-1990's, the percentage of students in the United States finishing high school or having earned equivalency diplomas increased in the last three years of the decade, up to 86.5 percent in 2000 from 85.9 percent in 1999 and 84.8 percent in 1998.

(A) finishing high school or having earned equivalency diplomas increased in the last three years of the decade, up to 86.5 percent in 2000 from 85.9 percent in 1999 and

(B) finishing high school or earning equivalency diplomas, increasing in the last three years of the decade, rising to 86.5 percent in 2000 from 85.9 percent in 1999 and from

(C) having finished high school or earning an equivalency diploma increased in the last three years of the decade, and rose to 86.5 percent in 2000 from 85.9 percent in 1999 and from

(D) who either finished high school or they earned an equivalency diploma, increasing in the last three years of the decade, rose to 86.5 percent in 2000 from 85.9 percent in 1999 and

(E) who finished high school or earned equivalency diplomas increased in the last three years of the decade, to 86.5 percent in 2000 from 85.9 percent in 1999 and

答案E，为什么这里WHO引导的定语从句不会造成歧义修饰美国呢？

2。另外，像...once the hydrogen in the Sun's core is exhausted, it will expand into...这里it 指代hydrogen，因为it无法指代所有格上的名词Sun，那么请问it可以指代core吗？

3. 还有，像A of B+that定从，that

1.美国是不能用who来修饰的。。。。

2.应该不能吧，这里还是可以用逻辑来解释的，这里我也吃不准。。。

3.that是就近修饰，应该是只能指代b

对于第一个问题，Who 之所以不能修饰美国，是因为in the US是核心词student的修饰语，所以WHO可以跳跃修饰students,刚刚才看到的，prep-2-101

2.还没答案，希望NN来回答

3.我发现that定从修饰A和B的都有。

第二题应该是按照从句中的主语部分代词优先指代原句中的主语来解释的，如果指代不了，可以指定其他的。

指代和时态是最难的，一直搞不明白

关于你的3，AB都有的，最好的方法是看AB对应that里的谓语动词单复数就可以明确指代了