No school team would like to invite them to play basketball ____________ because of their heights.
A:quietly
B:simply
C:hardly
D:strongly
电视机的室外天线能把电信号接收下来,是因为( )
如图是血液循环和气体交换示意图.请据图回答:(横线上填文字,括号内填数字)
____
从生殖和发育方面来看,鸟类比两栖动物高等的特征不包括的是