Read the following article and answer the question. Article: (C)The earth is not only, but also thirsty for water. This may seem strange to you. because nearly 70% of the earth's surface is covered with water. But about 97% of that is sea water, or salt water. Man can only use the other 3%--the fresh water from rivers, lakes, and other sources. And we can't even use all of that, because some of it is in the form of icebergs and glaciers . Even worse, some of it has been polluted. However, as things stand today, the fresh water is still enough for us. But our need for water is becoming larger and larger quickly--almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious world-wide water shortage later on. We all have to learn how to stop wasting our _ water, one of the first step is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system , from there it returns to sea or runs into underground places. But even if every large city reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world is to remove the salt. Question: The earth is thirsty for water because _ . Answer:

OPTIONS:
- man has not enough food to eat.
- we haven't had enough fresh water
- only 70% of the earth's surface is covered with water.
- more water is sent into the sewer system

Answer: we haven't had enough fresh water

Read the following article and answer the question. Article: American schools must obey the classroom rules. Here are some of them. If the teacher asks you a question, you should answer it at once. If you do not understand the question, you can put up your hand and ask the teacher to say it again. You must not be absent ( ) on a test day. If you are seriously ill, let the teacher know. If your teacher allows _ , you'd better take the test within one or two days after you return to class. It is rude ( ) to be late. If you are late, you should come into the classroom and go to your seat quickly. In the US it is not necessary to knock before you enter the classroom. In America, you should call your teacher by his or her last name, not "teacher". Also you should use Mr, Miss, Ms or Mrs before the last name, such as Mrs Smith or Mr Jones. In the US, it is impolite to eat, drink or chew gum ( ) during class. Don't do these until ( ) the break. Question: When is the best time to ask the make-up test? Answer:

OPTIONS:
- Within one or two days after you return to class.
- With a week after you return to class.
- Within ten days after you leave the hospital.
- Within five days after the first test.

Answer: Within one or two days after you return to class.

Read the following article and answer the question. Article: If you go to visit London,you will see a lot of buses and cars on the road,you will also see a lot of bikes because more people travel by bike.Why? There are a lot of reasons for this.First,it's very cheap to buy a bike,and riding bikes is quick, too.You often need to wait for a bus for half an hour.When the bus comes,there are so many other buses and cars on the roads so the bus moves very slowly.The underground train is quick but very expensive. I travel to work by bus for about four years.I often arrive at work late and feel tired.Then one day , a friend of mine says, "I go to work by bike,why don't we travel together?""Because my bike's old,"I answer,"and there are so many buses and cars on the road.I feel afraid...""Don't be afraid!"says my friend,"If you follow me and we ride slowly,you will be fine." Two days later I buy a new bike.We go slowly, but we arrive at work quickly. I spend 40 minutes going by bus, but only half an hour by bike! Now I love riding a bike. And I feel healthy. Many people think my idea is good and maybe you'll see more bikes on the road in the future. Many people think in the same way as I do.That's why you see a lot of bikes on the road.Who knows,perhaps in the future we'll have roads for bicycles only.I hope so! Question: Which is NOT mentioned about the good things of riding a bike in the passage? Answer:

OPTIONS:
- we can have more time.
- we don't need to pay much money.
- we can keep healthy.
- we can keep the air clean.

Answer: we can keep the air clean.

Read the following article and answer the question. Article: The world lost one of the most respected leaders. Nelson Mandela, the former South African president, passed away on Dec. 5, 2013. The whole world felt sorry about the death of Mandela, a great man of history. Mandela is mostly remembered for his efforts to end apartheid in South Africa. Mandela was born in 1918. In South Africa, there are both black and white people. But at that time, Black people couldn't live or travel where they wanted. They didn't have the right to vote, either. Mandela didn't think that was right. He organized many activities against it, but he was sent to prison for 27 years. Under international pressure, the government set Mandela free in 1990. Great changes in the law began to end apartheid. At that time, Mandela chose to forgive his enemies. He shook hands with the people who wanted him dead. He also encouraged black people to forgive the whites. Because of his forgiveness, Mandela is remembered as a moral model by the whole world. In1993,Mandela won the Nobel Peace Prize. A year later, he became the first black president of South Africa. Both black people and white people voted. Apartheid ended. In 1999, Mandela left office at the highest point of his power. Question: In 1993, Mandela won the Nobel Prize for _ . Answer:

OPTIONS:
- physics
- peace
- chemistry
- literature

Answer:
peace