美国已经工业化半个世纪了,但其温室气体排放还在增长,相比1990年,2007年美国的温室气体排放增加了多少。
A.12%
B.15%
C.16%
D.18%
参考答案:C
. Not far from the club, there is a garden, its owner __________ in it ___________ bridge with his children every afternoon.
A.seated; plays
B.seats; plays
C.seated; playing
D.seats; playing
人的社会化的生物基础包括有脑力劳动的条件、人有较长依赖生活期、()、()。