题目

把兔子的某信使RNA移入大肠杆菌细胞，大肠杆菌可合成兔子的蛋白。该实验说明：（   ）     A. 兔子和大肠杆菌具有相同的遗传信息   B. 兔子的基因已被转移到大肠杆菌内 C. 兔子的DNA可以指导大肠杆菌合成兔子的蛋白质  D. 兔子与大肠杆菌密码子通用 答案：DHello, I’m Mike. I like watching television and playing computer games. I can play football and basketball. I like basketball. I like basketball best（最）.My favourite food is cake. I like spring. It’s cool in spring.Hello, I’m Mary. I like singing and dancing. My favourite sport is swimming. My favourite colour is red. My favourite food is fish. I like summer. My sister likes summer, too. what about you?【1】Mary’s favourite sport is__________.A. running B. swimming C. walking D. playing basketball【2】Mary’s favourite food is__________.A. cake B. fish C. eggs D. bread【3】Mike likes___________.A. singing B. reading C. writing D. playing computer games