标题: 感觉挺简单，但是我错了！ [打印本页] 作者: 斯巴达 时间: 2010-4-22 16:14 标题: 感觉挺简单，但是我错了！ 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. A. transplant, use them to test drugs and potentially toxic chemicals, and may study them B. transplant, using them to test drugs and potentially toxic chemicals, and studied C. transplant, used to test drugs and potentially toxic chemicals, and studied D. a transplant, use them for testing drugs and potentially toxic chemicals, and for studying E. a transplant, used to test drugs and potentially toxic chemicals, and may study them作者: weirui5621 时间: 2010-4-22 17:21
答案是C吗？作者: gracezz 时间: 2010-5-26 20:41
这题也栽了一把。。。没看出来平行。。。竟然选了A。。。。作者: yawgamoth86 时间: 2010-5-26 21:17
答案C can be directed....(be) used.....and (be) studied 全程省略了be