有一个两位数，它的十位数字与个位数字之和为5，则符合条件的数有（）个。

发布时间：2017-04-19 21:37 │ 来源：www.tikuol.com

题型：填空题

问题：

有一个两位数，它的十位数字与个位数字之和为5，则符合条件的数有（）个。

考点：二元一次方程的应用

题型：填空题

阅读理解。

Many, many years ago there were many forests on the earth. The trees died. They fell down, lay (躺)
on the ground and became covered with earth. The trees of the old forests lay under the ground. The trees
lay for thousands of years. After a long time the wood was changed. It became black and hard. It became
coal (煤). Coal is not only used for burning. It is also used for many other things. For example, we can get
beautiful colours from coal. The matters (物质) to colour the walls of rooms are got from coal. Coal is one
of the most useful things in the world.

1. Many, many years ago, there were lots of _______ on the earth.

A. wood
B. trees
C. coal
D. stones

2. The trees fell down _______ they died.

A. before
B. after
C. if
D. or

3. The dead trees under the ground could be changed into _______.

A. trees
B. forests
C. coal
D. flowers

4. Coal is used for _______.

A. burning
B. many other things
C. everything
D. both A and B

5. _______ can be got from coal.

A. Only colours
B. Only one colour
C. All things
D. Many useful things

查看答案

题型：填空题

读“中东地区图”，完成下列问题。（5分）

（1）图中A海域联通的是________洋。

（2）中东丰富的石油资源主要分布在B_____湾及其沿岸地区。

（3）中东输往西欧的石油最近的航线经过C________运河。

（4）图中城市D________被伊斯兰教、基督教、犹太教看作是“圣城”。

（5）中东地区战争不断的主要原因有（）

①争夺交通要道②争夺淡水③争夺石油④宗教文化之争

A．①②

B．①②③

C．②③④

D．①②③④

查看答案

题型：填空题

cos15°=______．

查看答案

题型：填空题

“内怀殷忧，则达旦不瞑”句中“殷”的词义是

A．姓
B．深红色
C．深
D．非常
E．突然

查看答案

题型：填空题

当已有环境基础图件不能满足评价要求时，1级项目要应用( )方法编制各种基础信息图件。

A．遥感方法

B．地面勘测和采样分析相结合

C．地面勘察、勘测

D．遥感和地面勘察、勘测、采样分析相结合

查看答案

更多题库