题目

如图示科学家进行变形虫的切割实验，这个实验最能说明 A . 细胞核控制细胞的遗传 B . 细胞质控制细胞的遗传 C . 细胞核是控制细胞代谢的中心 D . 细胞质是控制细胞代谢的中心 答案：C2．听第10 段材料，回答第17 至20 题．17．What must you do before you can use your parking ticket？A．You should sign on your parking ticket．B．You should let your parking ticket stamped．C．Both A and B．18．When will the prize be drawn？A．On November 14th．B．On November 20th．C．On November 21st．19．How can man win a﹩1000 DVD Collection？A．Just buy and two DVDs．B．Just buy and three DVDs．C．Just buy and twelve DVDs．20．What do you know from the text？A．You must buy any three CDs and then your name will go into the competition．B．If you buy one shirt at Daniel's Menswear，you'll get one tie of the same value free．C．The"Buy one，get one free"offer is limited to one per customer．