It was a difficult time for the relatives of Missing MH370 passengers when they heard the bad news, but they didn't ________ hope.
A:give out
B:give off
C:give in
D:give up
13 ≈____%
34 =____%
45 =____%
C.【选修6—环境保护】
图20示意我国东北某区域不同时期人口数量和耕地、湿地面积的变化。读图回答下列问题。
在近代思想的发展过程中,对人的认识首先形成于( )