草履虫、酵母菌、衣藻都是仅有一个细胞的“袖珍”生物,也能进行独立的生活,这体现了( ) A.细胞是生命活动的基本单位 B.它们都能自己制造有机物 C.三者在分类上亲缘关系最近 D.它们都具有相同的遗传信息 答案:A从方框中选出适当的词语填空
(1) We'll never ________ studying.
(2) The naughty boy always ________ at school.
(3) Paper is ________ wood.
(4) In western countries we have to ________ even fruit and then eat With a fork.
(5) We ________ protect animals.