题目

下列叙述正确的是（    ） A. 含有6.02×1023个氦原子的氦气在标准状况下的体积约为11.2L B. 25℃，1.01×105Pa，64gSO2中含有的原子数为1.806×1024 C. 在常温常压下，11.2L Cl2含有的分子数为3.01×1023 D. 标准状况下，11.2LH2O含有的分子数为3.01×1023 答案：【答案】B 【解析】A. 含有6.02×1023个氦原子的氦气是1mol，在标准状况下的体积约为22.4L，A错误；B. 25℃，1.01×105Pa，64gSO2的物质的量是1mol，其中含有的原子数为3mol×6.02×1023/mol＝1.806×1024，B正确；C. 在常温常压下气体的摩尔体积大于22.4L/mol，因此11.2L Cl2含有的分子数小于3.01×1023，C错误；D. 标准状况下Young people are often unhappy when they are with their parents. They 1 that their parents don’t understand them. They often think their parents are too strict 2 them.Parents often find 3 difficult to win their children’s trust and they seem to forget how they themselves felt when they were young.For example, young people like to do things without 4. It’s one of their ways to show that they grow up and they can 5 any difficult problems. Older people worry more easily. Most of them like to plan things ahead and don’t like their plans to be known. So when you want your parents to let you do 6, you will have better success if you ask before you really start doing it.Young people often make their parents angry by the clothes they wear, the music they enjoy, and something else. But they 7 to cause any trouble. They just feel that in this way they can be cut off from the old people’s world and they want to make a new culture 8 their own. And if their parents don’t like their music or clothes or their ways of speech, the young people feel very sad. Sometimes 9 going out with their parents, they just want to stay at home alone and do what they like.If you plan to do something, you’d better win your parents over and get them to understand you.10 your parents will certainly let you do what you want to do.1.A.thinkB.hopeC.sayD.know2.A.withB.inC.toD.over3.A.thatB.thisC.oneD.it4.A.thinkingB.speakingC.seeingD.reading5.A.solveB.findC.knowD.find out6.A.everythingB.somethingC.nothingD.anything7.A.don’t meanB.meanC.don’t likeD.like8.A.atB.toC.overD.of9.A.insteadB.instead ofC.besidesD.except10.A.OfB.If notC.If soD.However