完型填空 Books are our greatest friends. They 1us stories of every country in the world. They give us all kinds of 2 . Life is short. One can not know and see 3 in the world. 4 the help of books, one is able to know what happened thousands of years ago and 5 is happening in every part of the world now. Books give us not only knowledge 6 pleasure. Reading good books is the best way of7 our free time. And many beautiful stories for children are 8and full of wisdom(智慧). All the great men 9 books. Knowledge from books helps them to succeed, because books are the source(源泉)of knowledge and knowledge is the source of 10 .
唐太宗说:“舟所以比人君,水所以比黎庶,水能载舟,亦能覆舟。”这说明唐太宗 ( )
生物膜在细胞的许多生命活动中发挥着重要作用.请回答以下问题:
(1)叶绿体和线粒体都是与能量转换有关的细胞器,两者中与 ATP 合成密切相关的膜结构的名称分别是____ 、____.
(2)科学家用____ 法能够分离细胞的各种结构.分离动物细胞结构时必须首先破坏细胞膜,破坏细胞膜最简便的方法是____
(3)在物质跨膜运输过程中,与细胞膜选择透过性密切相关的成分是____ .
下列关于浆细胞的说法正确的是