不是NN,仅作参考11、As the honeybee’s stinger is heavily barbed, staying where it is inserted, this results in the act of stinging causing the bee to sustain a fatal injury.
A. As the honeybee’s stinger is heavily barbed, staying where it is inserted, this results in the act of stinging causing
this不能指代整个句子
B. As the heavily barbed stinger of the honeybee stays where it is inserted, with the result that the act of stinging causes
错,无谓语
C. honeybee’s stinger, heavily barbed and staying where it is inserted, results in the fact that the act of stinging causes
错,heavily barbed and staying xxx做插入语改变逻辑意思,做谓语句子结构错误
D. the heavily barbed stinger of the honeybee stays where it is inserted, and results in the act of stinging causing
错,改变原句意思
E the honeybee’s stinger is heavily barbed and stays where it is inserted, with the result that the act of stinging causes
正确
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
错,can be directed, use and may study them不能构成并列
B. transplant, using them to test drugs and potentially toxic chemicals, and studied
错,can be directed, using them, and studied不能构成并列
C. transplant, used to test drugs and potentially toxic chemicals, and studied
正确
D. a transplant, use them for testing drugs and potentially toxic chemicals, and for studying
错,can be directed, use them, and for studying不能构成并列
E. a transplant, used to test drugs and potentially toxic chemicals, and may study them
错,can be directed, used to, and may study them不能构成并列