[讨论]GWD-17-33

ravebird

GWD-17-33:

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.

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

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

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

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

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

My key is C. Anyone go for A (least evil).

yangxiaogang

支持C

ravebird

For C, what part does "used to test" and "studied to gain" form parallelism? C looks awkward.

icare1

B

lyle

C应该是be directed，be used和be studied平行。

used和studied前面的be省略

布瓜丫丫

以下是引用lyle在2006-1-2 21:54:00的发言：

C应该是be directed，be used和be studied平行。

used和studied前面的be省略

恩，平行原则还是很重要的考点

maryheliu

But in original sentence, may is used before studied, why we can choose C which doesn't have may, will it change the basic meaning?

yangxuemei0111

transplant 在这里是名词？

晴天小狗

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

ABDE逻辑错误，后面整个都是在that从句之下，从句主语是cells， cells use错；celles不能自己use自己 ：）

E 若把may study 看作与从句并列，则cells自己不能study；

如果把may study看作与主句并列，则used前面应该有and连接才对

但是为什么C省略了may？？

晴天小狗

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

ABDE逻辑错误，后面整个都是在that从句之下，从句主语是cells， cells use错；celles不能自己use自己 ：）

E 若把may study 看作与从句并列，则cells自己不能study；

如果把may study看作与主句并列，则used前面应该有and连接才对

但是为什么C省略了may？？