I can’t remember when I started collecting litter. But it was when I got tired of (1)_____litter nearby and realized that(2)_____ was going to pick it up.
I live near a (3)_____ in Enshi, Hubei Province. I can walk there in three (4)_____! I (5)______ love going there to play with my dog. But one day there was so much litter there that I became very unhappy. I decided I had to clean up the forest. I wanted to (6)______ happy going there again.
I made my (7)_____ trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes (8)_____ starting to pick up litter, my bag was full! It had cans, bottles, broken glass and newspapers in it. From then on, I went to the forest four times a year to pick up the litter. I often (9) ______ there for three hours. It makes me feel 10)_____ to do something for the environment.
After each trip , I(11) _____all the litter that I’ve found. If (12)______ of it is recyclable(可回收的), I keep it. I can’t (13)_____ why people drop litter. But I will keep picking it (14)_____ they stop dropping it. I know I am only doing a small bit to help(15) ______, but I still think it is important.

According to a new Ministry of Education (教育部) survey, student safety has become a big problem. Nearly 50 percent of students say they are worried about robbery on the way to and from school. Now in many big cities in China, some school has taught an unusual lesson: self– protection. Students like this lesson as there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.
Chen Haoyu, a teacher at Beijing No.25 Middle School and a self–protection expert, gives young students advice on how to deal with danger.
If you are robbed
Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police.
If you are in a traffic accident
If you are hurt by a car, take down the car number; if it is a bicycle, try to contact your parents before you let the rider go. This is because you don’t know how seriously you are hurt.
If it is raining hard and there is lightning
Don’t stay in high places and keep away from trees.
When there is a fire
Get away as fast as you can. Put wet things on your body and try and find an exit. Do not take the lift!
If someone is drowning(溺水)
If you can’t swim, don’t get into the water. Cry out for help.
Remember that danger is never as far away as you think. Take care of yourself at all times!
【小题1】The underlined word “contact” means _______.

Now the air in our city is _______ than it used to be. Something must be done to stop it.

请先通读下面的短文，掌握其大意，然后从每小题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。（共15小题：每小题1分，满分15分）

There once was a master who went to India. In those times, we didn't have airplanes or many kinds of transportation that we do now. So the master went to India 1  . And when he got there, he saw a lot of fruit. In India they have plenty of fruit to sell, but much of it is 2 because they can't grow much 3  the water situation. So he saw one basket, a big basket of some very red, long fruit. And it was the cheapest in the shop, not expensive at all.
So he 4 and asked, "How much per kilo?" And the shopkeeper said, "Two rupees."(印度货币) Two rupees in India is 5 ; it's like dirt (尘土). So he bought a whole kilogram of the fruit and started eating it. But after he ate some of it: Oh, my God! His 6  watered, his mouth watered and burned, his eyes were burning, his head was burning and his face became 7 . As he coughed terribly , he 8  up and down, saying, "Ah! Ah! Ah!"
But he still continued to eat the fruit! Some people who were looking at him shook their heads and said, "You're crazy, man. Those are chilies（辣椒）! You can't eat so many; they're not good for you! People use them 9  a condiment（作料）, but only a little bit to put into food for taste. You can't just eat them by the handful like that; they're not 10 !" So the silly master said, "No, I can't stop! I paid money for them, 11  now I'll eat them. It's my 12 !"
And you think that master was silly, right? Similarly, we sometimes do a lot of things like that. we still continue just because we've 13  money, time, effort and love into it. Just like the man who ate the chilies and felt so bad but couldn't stop because he didn't want to waste the money he'd paid.
So 14  you've lost something, let it go and move on. That's better than continuing to 15  .

In the Caucasus region（高加索地区）, nearly 50 out of every 100,000 people live to celebrate their 100^th birthday, and many don’t stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Caucasus people aren’t alone. The Pakistani Hunzas, who live high in the Himalaya Mountains, and the Vilcabambans of the Andes Mountains in Ecuador seem to share the secret of long life too.
　　These peoples remain healthy in body and spirit despite the passage of time. While many older persons in industrial societies become weak and ill in their 60s and 70s, some Caucasus people aged 110-140, work in the fields beside their great-great-grandchildren. Even the idea of aging is foreign to them. When asked, “At what age does youth end?” most of these old people had no answer. Several replied, “Well, perhaps at age 80.” The very youngest estimate was age 60.
　　What accounts for this ability to survive (live) to such old age, and to survive so well? First of all, hard physical work is a way of life for all of these long-lived peoples. They began their long days of physical labor as children and never seem to stop. For example, Mr. Rustam is 142 years of age. He remembers his life experience: the Crimean War of 1854; the Turkish War of 1878; the Bolshevik Revolution in 1917. His wife is 116 years old. They have been married for 90 years. Mr. Rustam has no plan of retiring from his life as a farmer. “Why? What else would I do?” he asks. Oh, he’s slowed down a bit. Now he might quit (stop working) for the day after 6 hours in the field instead of 10.
　　All these people get healthful rewards from the environment in which they work. They all come from mountainous regions. They live and work at elevations（海拔）of 5,000 to 12, 000 feet(1,660 to 4,000meters) above sea level. The air has less oxygen and is pollution-free. This reduced oxygen environment makes the heart and blood vessel（血管）system stronger.
　　Another factor（因素）that may lead to the good health of these people is their isolation. To a great extent, they are separated from the pressure（压力）and worries of industrial society.
　　Inherited（遗传的） factors also play some role. Most of the longest-lived peoples had parents and grandparents who also reached very old age. Good family genes may, therefore, be one factor in living longer.
　　Finally, although these three groups don’t eat exactly the same foods, their diets are similar. All of them eat little animal meat. Their diets are full of fresh fruits, vegetables, nuts, grains, cheese and milk. They never eat more food than their bodies need.
　　It is clear that isolation from urban pressure and pollution, clean mountain air, daily hard work, moderate diets, good genes, and a youthful approach to life all lead to the health and remarkable long life of all these people.
【小题1】 What is the main idea of this article?