题目

三位科学家因“对核糖体的结构和功能 的研究”而获得2009年的诺贝尔化学奖。右 图为核糖体作用的机制，下列有关叙述正确 的是 A. ①和②的组成单位相同 B. ①上携带的氨基酸可通过查密码子表上的UGC得知 C. 图示的过程正在合成氨基酸 D. ②上某个密码子的一个碱基改变，所对应的氨基酸可能不变 答案：ADOn Sunday morning, I usually get up very late. I wash my face, and then go out to do morning exercises. It is about 8: 40 am. After I eat my　 　, I often go to a shopping centre　 my mother. The shopping centre is　 our home, so we walk there. It takes us about 20 minutes to get there. The shopping centre has a good　 . It is called“蓝莓购物中心”in Chinese. It doesn’t have an English name. Can you　 it in English? It is new and big. There are many things there, such as TVs, fridges, computers, clothes, food　 drinks. There are many    every day. There are men and women, the old and the    .　 　do many people come here to buy things? Do you know? Let me tell you. The workers there are always nice and friendly. The things there are usually good but not　 . If you come to my home, I can take you there and have a look. 小题1:A．breakfastB．lunchC．supperD．dinner小题2:A．forB．toC．ofD．with小题3:A．nearB．not farC．atD．far from小题4:A．flowerB．placeC．nameD．room小题5:A．sayB．speakC．tell D．talk小题6:A．butB．withC．orD．and小题7:A．studentsB．peopleC．childrenD．teachers小题8:A．tallB．shortC．youngD．small小题9:A．WhatB．WhoC．WhyD．When小题10:A．expensiveB．cheapC．bigD．new