题目

I am going to the restaurant, but I am lost. A boy helps me. I go down the street and turn left at the traffic lights. Then I go straight. Here it is! The restaurant is on the right.It's near the zoo.【1】I'm going to the park. （_____）【2】I'm lost. （_____）【3】A policeman helps me. （_____）【4】I turn left at the traffic lights. （_____）【5】The restaurant is not far from the zoo. （_____）20．人的红细胞可在0.9%的NaCl溶液中保持正常形态，若将红细胞置于浓盐水中，红细胞则会失水皱缩．这一事实说明（　　）A．无机盐对维持生物体的新陈代谢有重要作用B．无机盐对维持细胞的形态有重要作用C．无机盐离子容易进出细胞D．水分子容易进出细胞