单项选择题

It is one thing to locate oil, but it is quite another to ______ and transport it to the industrial centers.

A．permeate
B．extract
C．distinguish
D．concentrate
<上一题 目录 下一题>
热门 试题

单项选择题
Our reporter has just called to say that rescue teams will ______ to bring out the trapped miners.
A．effect
B．affect
C．conceive
D．endeavour
单项选择题
We agreed to accept ______ they thought was the best tourist guide.
A．whatever
B．whomever
C．whichever
D．whoever
相关试题