母亲的年龄是儿子年龄的四倍,三年前母子年龄之和是49岁,则母亲现在的年龄是多少岁(

题型:单项选择题

问题:

母亲的年龄是儿子年龄的四倍,三年前母子年龄之和是49岁,则母亲现在的年龄是多少岁( )。

A.45

B.50

C.40

D.44

考点:国家公务员行政职业能力测试行政职业能力测试
题型:单项选择题

The students were having their chemistry class. Miss Li was telling the children what water was like. After that, she asked her students, “What’s water?” No one spoke for a few minutes. Miss Li asked again, “Why don’t you answer my question? Didn’t I tell you what water is like?”

Just then a boy put up his hand and said, “Miss Li, you told us that water has no color and no smell. But where can we find such kind of water?The water in the river behind my house is always black and it has a bad smell.” Most of the children agreed with him.

“I’m sorry, children,” said the teacher. “Our water is getting dirtier and dirtier. That’s a problem.”

小题1:Miss Li was a _______ teacher.

A.English

B.Chinese

C.chemistry

D.math小题2:Miss Li was telling the children what ______ was like.

A.water

B.air

C.earth

D.weather小题3:A boy said, “The water in the river behind my house is always _______.”

A.white

B.black

C.clean

D.clear小题4:Most of the children _______ the boy.

A.agreed with

B.wrote to

C.heard from

D.sent for小题5:The water in the river has color and smell because it is getting _______.

A.more and more

B.less and less

C.cleaner and cleaner

D.dirtier and dirtier

题型:单项选择题

阿米巴原虫进入肝内的途径是()

A.肝动脉

B.肝静脉

C.门静脉

D.胆管

E.淋巴管

题型:单项选择题

“数a的2倍与10的和”用代数式表示为  

题型:单项选择题

在对孤儿、弃儿的救助中,( )需要通过社会工作人员进行联系并予以督导。

A.家庭寄养

B.收养服务

C.家庭领养

D.日间照顾中心

E.儿童福利院安置

题型:单项选择题

下列命令序列的执行结果是()A="2000"B1="1"A1=A+B1?A1

A.2001

B.AB1

C.A1

D.20001

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