国防的特征

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问题:

国防的特征

考点:军事武器装备军事武器装备题库
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阅读理解。

     In the past, old people liked to live with children and grandchildren while young people could show good

manners to them in this way.

     Now more and more old people prefer living alone and they hope their adult children move out if possible.

     The old idea of keeping many family members in a house is not good. Lots of old people like an easy life

after coming back from work. They would like to be free from heavy housework. Some want to visit places

of interest around the world. Some want to learn something new. Such as painting, dancing, handwriting and

so on. Because they want their dreams to come true. They no longer like to stay at home day by day. We

must understand old people and respect (尊重) their lifestyle.

1. In the past, old people _______.

A. lived alone

B. felt lonely

C. lived without their children

D. live with other family members

2. Why do old people want to live alone now?

A. Because their children want to move away

B. Because they have their own lifestyle

C. Because they have to do so

D. Because their children don't show good manners any more

3. What do old people want to do after coming back from work?

A. They want to do heavy housework at home

B. They want to travel around the world or learn something new

C. They want to live with their children

D. They want to stay at home every day

4. The passage (短文) tells _______.

A. old people are lazy now

B. old people's lifestyle is dangerous

C. old people can choose their own lifestyle

D. old people are getting worse and worse

5. Which is not true?

A. Old people want to live better

B. Young people should respect their parents

C. Old people like travelling

D. Old people like keeping busy with heavy housework

题型:问答题 简答题

下图表示了绿色植物光合作用的主要过程,下列说法不正确的是

A.X是O2

B.C6H12O6是有机物

C.C6H12O6与X反应生成CO2和H2O属于置换反应

D.绿色植物通过光合作用,将太阳能转化成化学能

题型:问答题 简答题

___________是正义的最起码要求,_ ______________是最严重的非正义行为。

A.不伤害他人.不侵犯他人的基本权利;故意伤害他人身体

B.履行社会职责;故意侵害他人身体

C.不伤害他人.不侵犯他人的基本权利;侵犯他人的政治权利

D.维护社会公共秩序;故意伤害他人身体

题型:问答题 简答题

下图为A、B、C三种固体物质的溶解度随温度变化的曲线图.请回答下列问题:(3分)

(1)40℃时,A、B、C三种物质的溶解度由小到大的顺序是________;请通过比较A、B两种物质的溶解度曲线,说明这两种物质溶解度变化的共同特点:_____________.

(2)若A为硝酸钾,60℃,将120 g A放入100 g水中,充分溶解后所得溶液的质量为______g.

题型:问答题 简答题

有效热效率(定义,表达式)

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