题目内容
9、―Scientists say it may be five or six years it is possible to test this medicine on human patients.
A．since B．after C．before D．when
试题答案
9、B
Scientists say it may be five or six years ________ it is possible to test this medicine on human patients．
- A.since
- B.after
- C.before
- D.when
Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
A. since B. after?
C. before D. when?
查看习题详情和答案>>Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
A．since B．after C．before D．when
查看习题详情和答案>>Scientists say it may be five or six years __________it is possible to test this medicine on human patients.
A.since B.after C.before D.when
查看习题详情和答案>>Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
| A．when | B．after | C．before | D．since |
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
| A．since | B．after | C．before | D．when |
Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.
| A．since | B．after | C．before | D．when |