题目

下列有关细胞的叙述，正确的是（ ） A . 真核细胞中无纺锤体形成则不能进行细胞分裂 B . 细胞膜的选择透过性与膜蛋白有关，而与磷脂分子无关 C . 细胞的分化、衰老都是基因选择性表达的结果 D . 原核细胞中只有质粒是环状DNA 答案：C 听材料，选择正确答案，完成表格信息。 Watching TV is a good way to relax(放松) in our free time. good things Some programs help children to understand __1__ all over the world. bad things Watching TV too much is bad for our __2__Some channels(频道) are really __3__ Advice Parents should help children to find other __4__ things to do. It's fun toread books, to __5__ or to visit friends.   (     )1. A the people.(     )2. A. hearing.(     )3. A. unhealthy.(     )4. A. helpful.(     )5. A. play chess. B. the language.B. eyesight.B. uncommon.B. important.B. play games. C. the news.    C. smell.       C. unpopular.   C. interesting. C. play cards.