微生物细胞体内与化学能转化有关的细胞器是（）。

单项选择题若有定义char c1, c2;,则以下不正确的函数调用是( )。 A. scanf( c1=%cc2=%c ,&c1,&c2); B. c1=getchar(); C. putchar(c2); D. putchar(c1,c2);

多项选择题补全对话；根据下面一段对话，选择正确的选项并排序，补全空缺处，使对话完整，符合情景和含义。 A: 1 . B:Yes.I’m not good at English. I plan to improve it. A:I see. We are sure to help you. B:I can’t follow my teacher when she speaks English in class. A:Well. Listening to English songs and news will help a lot. B:I’ll have a try. And I have trouble in writing English articles. A:Oh. 2 B:Besides, my spoken English needs improving, too. A: 3 You can communicate with the foreigners here. B:Good idea. 4 A:You can come here and fill in a form. Then you can choose your favorite course. Would you like to come here at 14:00？ B:Sorry, I’ll be busy then. Let’s make it 15:00. Is it OK? A:All right. 5 Keep trying and your English will be better soon. A. That would be fine. B. Can I help you? C. What shall I do about it? D. Why not join our club to practice speaking English? E. Maybe keeping a diary is a good method.