物质名称与化学式相符合的是( ) A.胆矾:CuSO4 B.氯化铁:FeCl2

题型:选择题

问题:

物质名称与化学式相符合的是(  )

A.胆矾:CuSO4

B.氯化铁:FeCl2

C.甲烷:CH4

D.氯化铵:NH3Cl

考点:化学式的写法和意义
题型:选择题

Young people and older people do not always agree. They sometimes have different ideas about living, working and playing. But in one special program in New York State, adults and teenagers live together in a friendly way.

Each summer 200 teenagers and 50 adults live together for eight weeks as members of a special work group. Everyone works several hours each day. They do so not just to keep busy but to find meaning and fun in work. Some teenagers work in the forests or on the farms near the village. Some learn to make things like tables and chairs and to build houses. The adults teach them these skills.

There are several free hours each day. Weekends are free, too .During the free hours some of the teenagers learn photo-taking or drawing. Others sit around and talk or sing. Each teenager chooses his own way to pass his free time.

When people live together, they should have rules. In this program the teenagers and the adults make the rules together. If someone breaks a rule, the problem goes before the whole group. They talk about it and ask, “Why did it happen? What should we do about it?”

One of the teenagers has said something about it: “You have to stop thinking only about yourself. You learn how to think about the group.”

小题1:In one special program in New York State, young and older people_________.

A.don’t work well together

B.live together like friends

C.teach one another new ways of building houses

D.spend eight weeks together, working as farmers小题2:All the members work some time every day mainly to_______.

A.lead a busy life

B.learn new skills of farming

C.get used to the life on the farms

D.find useful things and pleasure in work小题3: Living together__________.

A.the teenagers don’t have to obey the rules

B.the members have to obey the rules the adults make

C.the members have no free time but on weekends

D.the members should not break the rules they make together小题4: The last paragraph shows that the teenager thinks this the program is_________.

A.unpleasant

B.tiring

C.helpful

D.boring小题5:The best title for the passage is ____________ .

A.The Rules of Living Together

B.Life in New York State

C.Teenagers and Adults Together

D.Free Hours in the Special Work Group

题型:选择题

乘火车从甲地到乙地,每小时行120千米,6小时到达,从2007年元月开始将每小时提速到180千米,提速后几小时可以到达?

题型:选择题

涂料液体材料有()

A.催干剂

B.防潮剂

C.增韧剂

D.稀释剂

题型:选择题

网络安全机制涉及到网络安全策略与数字签名、 【17】 、第三方确认和Internet防火墙等技术。

题型:选择题

谐波制动的变压器纵差保护中设置差动速断元件的主要原因是()。

A.为了提高差动保护的动作速度;

B.为了防止在区内故障较高的短路水平时,由于电流互感器的饱和产生高次谐波量增加,导致差动元件拒动;

C.保护设置的双重化,互为备用;

D.为了提高差动保护的可靠性。

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