Research has been limited to ____ production profits, rather than ____ that GM f

题干

Research has been limited to ____ production profits, rather than ____ that GM foods are safe.

A．increasing; make sure	B．increasing; making sure
C．increase; make sure	D．increase; making sure

上一题下一题 0.4难度单项选择更新时间:2013-03-06 12:12:24

小学学科试题库

初中学科试题库

高中学科试题库