问题 单项选择题

下列属于主动转运过程的是

A.O2进入细胞内

B.Ca2+由细胞内出来

C.K+由细胞内出来

D.Na+进入细胞

E.CO2从细胞内出来

答案

参考答案:B

写作题

随着你的不断长大、初中毕业的不断临近,你一定在各方面发生了一些变化。请联系上题,并根据下面的提示,以“How I’ve changed!”为题,写一篇短文,字数80-100。要求:行文连贯,表达准确,以下主要信息【study, hobbies and interests, activities, friends等】都应该有所涉及。

How I’ve changed!

                                                                                         

                                                                                        

                                                                                         

                                                                                         

                                                                                         

                                                                                         

                                                                                         

                                                                                         

                                                                                         

单项选择题 B1型题