题目

一株基因组成为AA的玉米与一株基因组成为aa的玉米相互授粉，则这两株玉米所结的玉米粒A．胚的基因组成相同，种皮的基因组成不同      B．胚的基因组成不同，种皮的基因组成相同 C．胚的基因组成相同，种皮的基因组成相同 D．胚的基因组成不同，种皮的基因组成不同  答案：A解析:略  1.Because I          (经历过) the earthquake in Wenchuan, China before, I wasn’t frightened this time in Japan. (experience) 2.I was still sleeping           (火灾突然发生了), and then it spread quickly. (break) 3.        (正如我提到的) in my last letter, we can make our dreams come true by working hard. (mention) 4.        (每次他踢球时), the famous stat is watched by thousands of fans all over the world. (time) 5.The sign says “Nobody but doctors or nurses        (容许进入) the patient’s room.” (allow) 6.On the table        (有一只旧信封), which contains many photos. (lie) 7.News came from the school office        (他已被录取) to Beijing University. (admit) 8.       (失业) doesn’t’ necessarily mean that you are going to be a social failure. (be) 9.I have reached a turning point         (我必须决定) what to do and which path to take. (decide) 10.If only she         (朝前看) and planned better, then she wouldn’t have been feeling so worried. (look)