2009年国家将为医疗卫生、教育文化等社会事业发展投资1500亿元，

搜题请搜索小程序“爱下问搜题”

问题选择题

2009年国家将为医疗卫生、教育文化等社会事业发展投资1500亿元，将l500用科学记数法表示为

A．1.5×10^-3

B．0.15×10¹¹

C．15×10³

D．1.5×10³

答案

答案：D

分析：科学记数法就是将一个数字表示成（a×10的n次幂的形式），其中1≤a＜10，n表示整数，即从左边第一位开始，在首位非零的后面加上小数点，再乘以10的n次幂．

解答：解：此题中1 500的n=3，所以1 500=1.5×10³亿元．故本题选D．

完形填空

It was a sunny day. A city man was driving along a country road with a new wagon（马车）and a beautiful pair of horses. He didn’t pay a lot of________to where he was going. Pretty soon he________that he was lost, but he________to drive, expecting to re-find his way or to________someone who could tell him how to get back to the________.
It was a long________road. For many hours he kept on driving. When it was almost________，he saw in a________a tall farmer ploughing（犁地） the land. He stopped his________team of horses near the fence and called out，“Hello，farmer.”
“Hello，yourself，”the farmer replied，________ploughing.
“Where does the horse________？”he asked without knowing his language mistakes.
“I haven’t seen it go anywhere. It________stays right where it is，”said the farmer，________stopping his work.
“How far is it to the next town？” said the city man，speaking a little________.
“Don’t know. I never________it,” replied the farmer. By this time the city man was getting________.“What do you know？You’re the biggest fool I________ saw.”
________ stopping, the farmer turned and looked for a long time________at the city man. Then he said，“Maybe I don’t know much. ________I am a fool. But at least I’m not lost！”

查看答案

问答题

阅读下面文段，回答下列各题。

　　长白山是东北名山，其火山口处积水成湖，形成天池。天池是松花江、图们江和鸭绿江三江水源，

2005年被《中国国家地理》杂志评为中国最美的五大湖。范仲淹笔下的洞庭湖月景如“静影沉bì（　　）”，郦道元笔下的三峡急流是“素湍（　　）绿潭”，其实天池之美亦__________。

1．根据拼音写汉字或给文中划线的字注音。

　静影沉bì（　　）　　素湍（　　）

2．根据文意，在文中划线处填上一个恰当的成语：_________________

3．修改原文中划横线的病句。

　____________________________________________________________

查看答案