GWD-17-33

lilyblue_zl

33. GWD17-Q33:

Doctors hope that one day the body’s master cells, called stem cells, can be directed to grow in organs or tissues appropriate for transplant, use them to test drugs and potentially toxic chemicals, and may study them to gain insight into basic human biology.

 

1. transplant, use them to test drugs and potentially toxic chemicals, and may study them

2. transplant, using them to test drugs and potentially toxic chemicals, and studied

3. transplant, used to test drugs and potentially toxic chemicals, and studied

4. a transplant, use them for testing drugs and potentially toxic chemicals, and for studying

5. a transplant, used to test drugs and potentially toxic chemicals, and may study them

我选B, 答案是C

句子结构应该是：master cells can be directed...and (be) studied... 所以A, D, E顺利排除；

但是C中：    transplant, used to test....的逻辑意义变为：用被移植体测试drug.... ；个人认为逻辑不正确

因而选B。 请大家一起讨论讨论！

oumengling

used to test 的主语不是被移植体而依然是stem cells,stem cells是be directed to , used to, 和studied 三者的主语

lilyblue_zl

楼上貌似有些道理。谢谢!!

EquityBeta

这道题似乎是在考查动词的分词形式在句子中的作用，看了帖子，楼上说used to ... , and studied to是和be directed to平行的结构。

 

我有不同的看法，我觉得它们是和appropriate for transplant平行，共同修饰organs or tissues的。

 

有想法吗？

Freehorser

记得白勇语法上说，ed分词优先作定语修饰名词

干细胞的研究据我所知，就是要培养成器官后进行医学实验，单个细胞怎么实验？

因此觉得正确的解释是adj短语和ed短语平行作定语

lixinli

我也选错了,后来看了半天终于明白了,其实是3个词并列:

can be directed...used...,and studied...

果然是逻辑意思优先啊.仔细,仔细,再仔细!