题目

关于化学反应的说法错误的是（    ） A. 如图所示的反应为放热反应 B. 化学反应中有物质变化也有能量变化 C. 需要加热的化学反应不一定是吸热反应 D. 化学键断裂吸收能量，化学键形成放出能量 答案：【答案】A 【解析】 【详解】A. 从图中所示信息可以看出，反应物的总能量低于生成物的总能量，因此为吸热反应，A项错误； B. 化学反应中，有新物质的生成，其实质是旧化学键的断裂和新化学键的形成，伴随着能量变化，B项正确； C. 吸热反应与是否加热无关，需要加热的化学反应不一定是吸热反应 Recently, many people have begun to try a new way of doing shopping through the Internet. They are very interested in it. Why is itbecoming more and more popular now? There are some reasons. First, more and more people have their own computers and their computers can be joined with the Internet. So it is possible for many of them to do shopping through the Internet. Second, shopping through the Internet can save them some money and a lot of time. Third, they don't need to go to the shop themselves.  Because of these good facts, few people refuse it.On the other hand, some people don't like this new way of shopping. They are worried about the safety of shopping online. Customers(顾客)can only see the pictures of a product on the Internet. And they can't enjoy the pleasure of buying things in a large supermarket or a wonderful shopping center. These are the reasons why they do not like it.But I think more and more people will like this new kind of shopping in the future1.Many people are interested in ______ onlineA.watching TVB.readingC.studyingD.shopping2.From the first paragraph，we know ______A.no one likes buying things onlineB.more and more people don't like shopping through the InternetC.shopping on the Internet is more and more popularD.There are no advantages about shopping on the Internet3.People like doing shopping on the Internet because it can ______A.save their money and timeB.help them make a lot of moneyC.be very easyD.help them save time4.Some people don't like shopping online because they______A.have to pay more moneyB.must send their money first onlineC.don't have enough timeD.are worried about the safety of shopping online5.What's the best title(题目)of this passage?A.Why don't people like going shopping?B.Shopping through the Internet is very popularC.How do people shop with little money?D.Chinese people don't like shopping on the Internet