- UID
- 586457
- 在线时间
- 小时
- 注册时间
- 2010-11-29
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
.A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care. (A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, (B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle, (C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients, (D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that (E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,
OA is E
请问E 中 a derivative of which has proved useful in decreasing mortality among young leukemia patients是同位语(derivative指代M)还是which指代M 感觉像同为 不过解是里貌似不这么说 另外我选c 我认为原句本来说a substance iscultivated 但e把它给改了 |
|