题目

23.下列生理过程中，既需要载体协助，同时又产生ADP的是(    )      A.乙醇进入胃粘膜细胞                 B.根成熟区表皮细胞吸收K+ C.O2从肺泡进入毛细血管                D.CO2从组织细胞进入血液 答案：B改写句子 按括号中的要求完成改写后的句子，每个空格填一个单词。（5分）改写句子 按括号内的要求完成改写后的句子，每空一词。（5分）1.Bill did his homework at home. (改写为否定句)Bill ________ ________ his homework at home2.The little girl used to eat candy in the evening.（改为一般疑问句）_________ the little girl __________ to eat candy in the evening?3.I have waited for the bus for twenty minutes. (就句子划线部分提问)______ ______ have you waited for the bus?4.Nobody else is taller than Yao Ming on the basketball team.（改写句子，句意不变）Yao Ming is ________ ________ on the basketball team5.The boy got up too late, so he couldn’t catch the school bus. （改写句子，句意不变） The boy got up _________ late ________ catch the school bus.