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问题 单项选择题

颈椎中棘突最长的是（）。

A．第2颈椎

B．第4颈椎

C．第5颈椎

D．第6颈椎

E．第7颈椎

答案

参考答案：E

解析：

第7颈椎棘突不分叉并且特长，体表容易扪到，又名“隆椎”。

阅读理解

My name is Lily. This is my classroom. There are 40 desks, 40 chairs, a bookcase, a computer and a teacher’s desk in it. It has two green doors and four windows. There’s a clock and a map on the wall(墙壁). Look, that is Kate. She is my friend. A red bag, three black pens and four green pencils are on her desk. My favourite day is Saturday. We have no classes on Saturdays and Sundays.

小题1:How many pencils are there on the desk?

A．Three

B．Two.

C．One

D．Four.小题2:The doors are _____________.

A．green

B．red

C．white

D．blue小题3:What’s on the wall’?

A. A clock.                B. A map.            C. A bookcase.      D. A and B.

小题4:Lily’s favourite day is _____________.

A．Monday

B．Friday

C．Saturday

D．Sunday小题5:Which is TRUE? (哪一个是正确的)

A．Kate’s pencil is yellow.

B．There are 4 pens on the desk.

C．There are 4 windows in the classroom.

D．The bag is yellow.
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选择题

下列有关氧化还原反应的叙述中正确的是

A．有单质参加或有单质生成的反应一定是氧化还原反应

B．氧化还原反应的本质是元素化合价的升降

C．金属单质在化学反应中一定作还原剂

D．失电子的反应物在反应中作还原剂，生成还原产物
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