在稻田中，影响水稻生活的非生物因素有（     ）

①阳光  ②杂草  ③水分   ④土壤   ⑤田鼠  ⑥空气   ⑦蝗虫   ⑧稻螟

A.     B.     C.      D.       E.

阅读理解

    Mary is a very little girl. She is only three years old. She can't read and write, but she likes drawing very much.

    One day, her sister, Jean sees her at the desk. She thinks Mary is drawing. She comes to her, but she finds Mary isn’t drawing. She is writing on the paper.

“What are you doing, Mary?” Jean asks her.

“I’m writing to Ann. ” She answers.

“But you don’t know how to write, how can you write to her?”

“Oh, it doesn’t matter(没关系). Ann can’t read and write, either(也). ”

①原子数目  ②原子的种类  ③分子数目  ④分子的种类   ⑤元素的种类  ⑥物质的总质量  ⑦物质的种类．