题目

列关于真核细胞结构和功能的叙述，正确的是：     A.细胞膜对物质的进出具有选择性     B.衰老细胞的核体积减小，核膜内折     C.溶酶体能合成多种水解酶     D.在普通光学显微镜下可分辨出核糖体 答案：A阅读下面的日记，按要求完成任务。April 12thDear Diary,Today was Sunday.In the morning I was going to have a picnic with my friends. But it was rainy. SoI had to stay at home. I washed my clothes and cleaned the floor. After finishingthe work, I was very tired.At three o'clockin the afternoon, my cousin Sarah asked me to see a film. I was happy. But I didn'tfind my pet kitten. Sarah and I looked for him here and there. Guess! Where washe? He was in my cap! When we came to the cinema, it was about four thirty. Whata bad day!Mary判断（1）~（3）的正误，回答（4）、（5）的问题：（1）Today is April 12th.（2）Mary didn't have a picnic because it wasrainy.（3）Sarah and Mary didn't go to see the film.（4）Why was Mary tired?（5）Did Mary find her kitten at last(最后)?