题目

完形填空 Today is the last Saturday before Christmas. Everyone in the USA    1  shopping for presents.  2   is falling. People are walking fast .They are trying to keep ___3___as they move from shop to shop .In the shops children are ___4___ at the toys. They are talking to a man called Father Christmas. He asks “What do you want for Christmas ?”    In the USA it is warm and beautiful in summer .The trees and fields are green then. But now it is winter and     5    is white. At    6   there are different colours. Small lights make the houses and builings  （2015秋•赣州期末）下列叙述正确的是（ ）A．变形虫的摄食过程利用了胞吞作用原理B．葡萄糖跨膜运输不需要载体蛋白C．分子量小的物质或离子都可以通过自由扩散进入细胞D．需要载体助的物质运输都是主动运输