化简：（1）500（2）12x（3）423（4）23a2 发布时间：2017-06-04 22:46 │ 来源：www.tikuol.com 题型：解答题 问题： 化简：（1）500（2）12x（3）423（4）23a2
题型：解答题 完形填空。 Many people use email to communicate with each other. If you can surf the Internet, it is a great __1__ to send messages easily, quickly and as often as you like. No __2__ is it necessary to find a pen or paper, not to __3__ an envelope or stamp. Are we missing anything by not writing paper letters to people? Must you take the __4__ of writing them if you want to receive such letters? Most people would probably answer, "No, it is a waste of paper __5__ , and this is a much better system." It is hard to be against such a viewpoint. However, I would like to try. I believe that the kinds of letters people __6__ to write were probably more __7__ than billions of emails sent today. Of course, when it __8__ to sending quick messages, email is the best. If __9__ is important, email is particularly useful. __10__, if you want really to touch someone, a letter is more personal. __11__ letters are the most personal. If you can type fast, you can put a lot into a letter, but it lacks (缺 少) the special sense that comes from seeing the handwriting. As long as it is understandable, it doesn't matter how tidy it is. When someone sits down and just writes to you, you will __12__ that when you are reading it. Though I'm a teenager, I admit that I too feel __13__ to receive a letter in the mail. I love seeing my name written by hand on __14__ . You make yourself a cup of coffee, sit down in a comfortable place, open your letter , and enjoy everything that the person puts into those words just for you. What a gift! ( ) 1. A. chance( ) 2. A. longer( ) 3. A. say ( ) 4. A. question( ) 5. A. anyway( ) 6. A. needed( ) 7. A. important( ) 8. A. runs( ) 9. A. money ( ) 10. A. However( ) 11. A. Long( ) 12. A. feel( ) 13. A. excited( ) 14. A. a letterB. way B. much B. speak B. troubleB. too B. used B. usefulB. leads B. meaning B. So B. Typed B. love B. disappointedB. a list C. funC. lessC. talkC. pleasureC. simplyC. gotC. helpfulC. comesC. feelingC. ThereforeC. HandwrittenC. wantC. puzzledC. a paper D. time D. important D. mention D. problem D. just D. agreed D. meaningful D. arrives D. time D. But D. Short D. like D. surprised D. an envelope 查看答案
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题型：解答题 日本的人口密度约为中国的3倍，且人民的生活水平较高，这说明日本的人口容量较大，以下是其原因的是：①自然资源丰富 ②科技发达 ③对外开放程度高 ④消费水平高A．①②B．②③C．①④D．③④ 查看答案
题型：解答题 某招标工程按《建设工程工程量清单计价规范》(CB 50500—2003)编制工程量清单，其中分部分项工程量清单的项目编码十至十二位应( )。A．按附录的规定设置 B．按规定的统一项目编码编制C．由清单编制人设置 D．由投标人自001起顺序编制 查看答案