问题
Most environmental problems exist because______measures for preventing them have not been taken in the past.[ ]
A: accurate
B: extreme
C: tentative
D: adequate
B: extreme
C: tentative
D: adequate
正确答案是：
同类题型
_______ do you spell “tree” —-T-R-E—E
Close the door of fear behind you，and you ________ the door of faith open before you.(2012·湖南)
Thelittleboystoodbeforetheshopwindow,______hiseyesonthetoybearinit.[ ]
There is a(n) ________ of peace and calm in the country, quite different from that of a big city.