地壳中含量最多的两种元素是[ ]
A、硅、钠
B、氧、铝
C、氧、硅
D、钾、镁
答案：C
—Would you mind to the town you visited last year?
—Of course not.
A．sending; which
B．to be sent; where
C．being sent; which
D．being sent; where
下列选项中都属恒温动物的一组是
A．蜥蜴和大猩猩
B．喜鹊和斑马
C．海龟和虎
D．眼镜蛇和狮
