题目

用方框中所给词的适当形式填空。 realsomecomputer picturemap （1） There are thirty on everyone's desk in our classroom. We can do homework on it. （2） — What can you see inthese ?— Some dogs and cats. （3） This is a ofthe world. （4） There aren't pens in the bag. （5） Our school is big and nice. 答案：【1】computers 【1】pictures 【1】map 【1】any 【1】really生物圈的圈层厚度约为 [　　] A．10千米B．20千米C．150米D．300米