题目

2月29日，新发布的《环境空气质量标准》中增加了PM2.5监测指标．PM2.5是指大气中直径小于或等于2.5微米的颗粒物，对人体健康影响甚大，主要来源之一是化石燃料的燃烧．下列措施能减少PM2.5污染的是（ ）  A.鼓励开私家车出行        B.鼓励使用太阳能热水器  C.鼓励用煤火力发电        D.鼓励用液化石油气作燃料短文填空。根据下面短文内容，在短文的空格处填上一个恰当的词，使短文完整、通顺。In 1971 , a poor young man was traveling across the country , trying to make a new start for himself . On the way, he had completely run out of1., so he had no food to eat and had to live in his car.This continued until one morning. After a week of sleeping in his car , he walked into a restaurant and ordered a big breakfast . After eating his first good meal in weeks, he found he had to2.to the waiter, telling him he had lost his wallet . He was so embarrassed that his face turned red. The waiter, also the owner, walked behind the young man’s seat. He bent down（弯腰）, and stood up3.a $20 bill in his hand . It seemed as if it had fallen on the floor. “Son, you must have dropped this . ” the owner said . The young man was so4.that he couldn’t believe his eyes ! He quickly5.for the breakfast and headed west.On the way out of town, he realized, “ Maybe6.dropped the money at all . Maybe the owner of the restaurant just knew I was in trouble and he helped me in a way that didn’t embarrass me . What a kind person he is !7.I have the chance in the future; I will do the same to help others. ”Now older, the man lives near Kansas City. Each year he gives away thousands of dollars to poor people. He is8.as the “Secret Father Christmas”, because at Christmas time each year, he personally hands money out to those homeless people on the streets. Last year, he gave more than $50,000 away in Kansas City.