单项选择题

Now there are sophisticated tests which can______ poisons in the tiniest amount not even enough to kill a mouse.

A．discern
B．ascertain
C．detect
D．locate
<上一题 目录 下一题>
热门 试题

单项选择题
______the giant panda belonged to the bear______ raccoon families was a matter of zoological contention for many years.
A．Whether...or
B．That...and
C．As...and
D．That...or
单项选择题
John Smith Community College is an open-door educational institution______ to providing higher education to all who can benefit.
A．contributed
B．committed
C．subjected
D．assigned
相关试题