题目

 下列操作或用途中，既跟二氧化碳的物理性质有关，又跟二氧化碳的化学性质有关的是 A．用二氧化碳制干冰               B．将二氧化碳加压溶解制汽水 C．二氧化碳可使石灰浆变硬         D．二氧化碳可用来灭火 答案：D 阅读理解 　　A jobless man wanted very much to have the position of “office boy” at Microsoft．The HR manager interviewed him and then watched him cleaning the floor as a test．“You have passed the test,” he said．“Give me your e-mail address and I'll send you the form to fill in and the date when you may start．” The man replied, “But I don't have a computer, neither an e-mail．” “I'm sorry,” said the HR manager．“If you don't have an e-mail, that means you are not living．And anyone who isn't living cannot have the job．” 　　The man left with no hope at all．He didn't know what to do with only＄10 in his pocket．He thought and thought．Then he went to the supermarket and bought 10 kilos of tomatoes．He sold the tomatoes from door to door．In less than two hours, he had 20 dollars．He repeated the operation three times, and started to go early every day, and returned home late．Shortly, he bought a cart, then a truck, then he had his own fleet of delivery vehicles(运货车队)．Five years later, the man was one of the biggest food retailers(零售商) in the US． 　　One day, one of his friends asked him for his e-mail．He said, “I haven't got one．” His friend couldn't believe his ears．“Can you imagine what you could have been if you had an e-mail?” The man thought for a while and replied, “Yes, I'd be an office boy at Microsoft!” (1) What did the man do for the test? [　　] A． He sent e-mails． B． He did the cleaning C． He sold computers． D． He filled in forms． (2) The man didn't get the job because he ________． [　　] A． disliked such a job B． didn't pass the test C． didn't have an e-mail D． knew nothing about computers (3) The man ________ after he left Microsoft． [　　] A． went to look for another job B． asked for food from door to door C． thought of an idea to make monkey D． bought a computer and got an e-mail (4) Why could the man become one of the biggest food retailers in the US? [　　] A． Because he had many friends to help him． B． Because he was smart and worked very hard． C． Because he had his own fleet of delivery vehicles． D． Because he wanted to show Microsoft he was living． (5) What does the story want to tell us? [　　] A． Computers are very important in our daily life． B． Everyone can make a lot of money with only＄10． C． The HR manager didn't find the ability of the man． D． Nothing in the world is impossible if we work hard．