| 到底什么时候该省呢，我看了好多题都没唔出来，有的觉得没有歧义的反而一定要不补出的
好像有的情况下直接就省略了，有些有没有，有具体的规定吗，比如说：
823.The Rorschzch test is gaining new respect as a diagnostic tool because it takes only one hour to expose behavior and thought processes that may be unlikely to emerge in other procedures or weeks of ordinary interviewing.
(A) that may be unlikely to emerge in other procedures or weeks of ordinary interviewing
(B) whose emergence is unlikely in other procedures or weeks of ordinary interviews
(C)that might not emerge in other procedures or in weeks of ordinary interviews
(D) that may not emerge under other procedures or weeks of ordinary interviews（C）
(E) unlikely not to emerge during weeks of ordinary interviewing or in other procedures
大全823题，正确答案就是that might not emerge in other procedures or in weeks of ordinary interviews, in 没有省略， 可是在别的地方都是省略的啊， 还有一道prep 破解版的题
The Sports Medicine Programs of the Olympic Training Center, a complex where final tryouts are held for athletes representing the United States in the Olympics, is geared toward enhancing athletes' performance and toward their preparation for international competition.
(A) is geared toward enhancing athletes' performance and toward their preparation
(B) is geared to enhance the performance of athletes and to prepare them
(C) are geared to enhance athletes' performance and their preparation
(D) are geared toward the enhancement of athletes' performance and toward preparing them
(E) are geared toward enhancing the performance of athletes and preparing them
答案是E, 介词省略了， 虽然E的确是这几个选项里的优选，但是介词是可以可省可不省的吗？
| 
