问题补充:
Scientists say it may be five years it is possible to test this medicine on human patients.
A. since
B. until
C. before
D. when
答案:
A. since
B. until
(答案→)C. before
D. when
解析:本题考查连词。句意:科学家说可能还要五六年才可能将此药试验在人身上。before引导时间状语从句,表示“过了……就”。
时间:2021-11-12 13:03:44
Scientists say it may be five years it is possible to test this medicine on human patients.
A. since
B. until
C. before
D. when
A. since
B. until
(答案→)C. before
D. when
解析:本题考查连词。句意:科学家说可能还要五六年才可能将此药试验在人身上。before引导时间状语从句,表示“过了……就”。
早上 XX睡过头了 上学迟到了 请描写他站在教室门口时的心理 动作.200字左右需要很
2024-08-19