Hi, good morning. My name is Wang Xu and I'm1student of No.8 Middle School. This is our2.It's new and big.3the library, you can4books everywhere, but it is still very5.We Call read books and do our homework(家庭作业)there.6the desks and chairs? They are on the second (第二) floor of the library. Look! That7is Linda. She is a friend of 8 .She likes reading and she is a good student. I think she is like my 9 because she often10me study English.

下列关于草履虫的叙述中，不正确的是(     )

Drunken drivers are sent to prison even without ____ (cause) accidents.

2010年4月冰岛火山爆发，火山灰中含有一种叫砒霜的物质，砒霜的主要成分是三氧化二砷（As₂O₃），其中砷的化合价为（　）