单项选择题




<上一题 目录 下一题>
热门 试题

单项选择题
The Consumers' Institute website is normally a ______ primary source of information about new products.
(A) rely
(B) relying
(C) reliable
(D) reliably
单项选择题
______ scientists to develop a vaccine for the bird flu virus, they could potentially help save millions of lives.
(A) If
(B) Should
(C) Were
(D) Unless
相关试题