黄丝藻属的细胞壁：（）。A.由“H”形节片套合组成 B.如同培养皿一样由上下两壳套合 发布时间：2019-07-05 05:38 │ 来源：www.tikuol.com 题型：单项选择题 问题： 黄丝藻属的细胞壁：（）。A.由“H”形节片套合组成B.如同培养皿一样由上下两壳套合而成C.由许多小板片组成D.无细胞壁
题型：单项选择题 短文改错 We are all busy talking about and use the Internet which set up in the 1960s. At first, the Internet was only used by the government, but in early 1970s, the universities, hospitals and banks were allowed to use it, too. However, computers were even very expensive and the Internet was difficult to use it. By the start of the 1990s, computers become cheaper and easier. Today it is easy to get on-line and it is talked that millions of people use Internet every day. Send e-mail is more and more popular among students. It has now become one of the most important parts of people's life.1. _____2. _____3. _____4. _____5. _____6. _____7. _____8. _____9. _____10. _____ 查看答案