试题与答案

金字塔最早是什么颜色()A、黑色B、红色C、白色D、黄色

题型:单项选择题

题目:

金字塔最早是什么颜色()

A、黑色

B、红色

C、白色

D、黄色

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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阅读下面短文,根据短文内容完成表格中所缺信息,每空一词。
     If we find a bird nest, we will have  a  good  place  of  observing(观察) and  knowing about birds.
     Birds sit on eggs and take care of their baby birds from April to June. Because the  baby birds are
too young to leave the nest, mothers often leave and come back to the nest during the time to look for
food. So it is good to observe birds. When we  observe  birds, we'd  better  hide  ourselves in a close
place to the nest, and it's better for you to use binoculars(双筒望远镜).
     But how to make a bird nest? It's very easy. If you want to make one, please follow these:
     Making a nest: A good nest must be very fine, strong, thick and easy.
a) Each nest must have six boards. Don't make the boards too slippery.
b) Dig a small hole in the front of the nest as a door. The "door" is from 3cm to 5cm. So the bird can
fly in or out easily.
c) Make sure the rainwater doesn't go into the nest.
d) One piece of the boards should be easy to open.
e) Please don't forget to color the nest.
1.How do birds look                  after  their   1   birds?They sit on  2      and take care of their baby birds from 3      to June.
Mothers often   4    and come back to the nest during the time to look     for   5   , because the baby birds are too young to leave the nest.
2.When we observe birds,we'd better hide  6   in a close place to the nest, and you had  7 use
binoculars(双筒望远镜).
3. How to make a    
bird   8   ?
a) Each nest must have six boards. Don't make the boards too slippery.  
b) Dig a small hole in the   9   of the nest as a door. The "door" is from  3cm to 5cm. So the bird can fly in or out easily.
c) Make   10   the rainwater doesn't go into the nest.
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题型:填空题

物质的加热.

(1)酒精灯的使用方法:①禁止向______的酒精灯里添加乙醇;②要用火柴点燃,禁止用______点燃另一只酒精灯;③用______加热;④熄灭时,用______灭,不能用嘴吹;⑤盛酒精量不能超过酒精灯容积的

2
3
,也不得少于
1
4

(2)给物质加热的方法及注意事项:①加热玻璃仪器时,要把容器壁外的水擦干;②很热的容器不要立即用冷水冲洗.以免受热不匀而破裂;③给盛有液体的试管加热时,试管内液体的量不可超过试管容积的______;④加热前应先______试管;⑤试管应______放在外焰上;⑥试管口不能朝着______的方向;⑦给试管里的固体药品加热时,试管口要略向______倾斜,受热均匀后再固定加热.

(3)给液体物质加热的仪器可用试管、烧杯、烧瓶等;给固体物质加热,可用干燥的试管.

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