A:See her aunt.
B:Go shopping.
C:Send milk.
—Who can help me carry the heavy box?
—I think David is _______ to do it. But the door is ______for him to go through.
下列有关文学常识的表述,有错误的一项是 ( )
①民族资产阶级发展民族工业 ②革命知识分子出版刊物,宣传革命
③清政府倡导维新变法 ④成立兴中会、同盟会等革命团体
(2015•成都)自然选择是指生物在一定的环境条件下,在生存竞争中____生存,不适应者被淘汰的过程,生存竞争是自然选择的途径,生物的____性和适应性是自然选择的结果.