题目

完形填空 ，阅读下面短文,掌握其大意,然后从A、B、C、D四个选项中,选出可以填入空白处的正确答案。 Do you know Eskimos(爱斯基摩人)? Let me _1__ you something about their life. The Eskimos live near the North Pole(北极). There are only two seasons _2__: winter and summer. There is no spring __3__ autumn there. The winter nights are long. You can't __4__ the sun for more than two months, even at noon. The summer days are long. For more than two months, the sun never __5__ and there is no night. The Eskimos have __6__ clothes. They make their clot如图所示的四种现象中，由于光的直线传播形成的是A. 插入水的铅笔好像弯折了B. 屏幕上的手影C. 水中山的倒影D. 蜡烛在平面镜中的像