题目

外存储器的作用是提高（）。 A . 存取速度 B . 存储能力 C . 微机配置的档次 D . 运算能力 答案：B根据上下文填空。1. There are so many _______ visiting the Great Wall every year. 2. We can call bicycle _______ for short. 3. The scenery in the _______ is really beautiful. 4. Don't _______ about me, Mom. I can look after myself. 5. She is _______ in hospital. Let us cheer him up. 6. The traffic in our _______ really busy especially in the rush hour. 7. Students in Hongshanhu and Kaishandao have to get to school by _______. 8. In China, bikes and buses are the most popular means of _______. 9. He wanted to go to Greece or Spain for vacation, but _______ on Canada. 10. I don't like to stay outside, I 'd like to _______ videos to watch at home.