About 97% of the world’s water is salty and is found in our oceans and seas. But, as we can’t drink sea water, how can it be important?
Every part of our seas and oceans contains an amazing number of animals and fish that live at different ocean depths. Most of the different species of animals and fish depend on simple plants for their food. These simple plants called algae (海藻) drift near the surface of the ocean and use sunlight to turn carbon dioxide and water into food and oxygen. In fact, algae produce over half of the oxygen people breathe. How important sea water is!
Each plant or animal in our seas and oceans is an important link in a food chain. The algae are eaten in large amounts by microscopic animals, which are in turn consumed by larger animals. These food chains are delicately balanced.
The bad news about the food chains in the oceans is that they are under threat because of man. People once thought that the oceans were so big that it didn’t matter if we dumped rubbish into them or caught huge quantities of fish and whales for food. But we now know this is not true and fish stocks in the oceans have started to drop.
Thankfully, the world is taking steps to protect the future of our oceans by introducing international agreements to protect marine habitats. Most countries have introduced fishing restrictions to protect fish stocks in the oceans and new techniques are being pioneered to cope with pollution. Finally, the importance of protecting oceans is being made known to more people. This is just the beginning of a long process to protect the oceans for our future. We depend on the oceans for fish which are an important part of the human diet. How important sea water is! 
46. Which of the following is the proper order of the food chain?
A. small animals→algae→microscopic animals→large animals→man
B. algae→microscopic animals→large animals→larger animals→man
C. small animals→algae→large animals→microscopic animals→man
D. microscopic animals→algae→large animals →larger animals→man
47. People used to think that the rubbish thrown into the sea ________.
A. wouldn’t harm the fish in the sea   B. would change the balance of the food chain
C. would be broken down in the sea   D. wouldn’t do much harm to the sea
48. From the passage, we learn that _________. 
A. most fish and sea animals live at the surface of the seas
B. it is very difficult to break the balance of a food chain
C. excessive fishing has caused the decrease in fish stock
D. it won’t be long before the problems concerning oceans will be solved
49. Which of the following is NOT a way being used to protect oceans?
A. The use of international agreements.   
B. Forbidding fishing to protect fish stocks.
C. The use of new techniques.          
D. Raising people’s awareness of the need to protect oceans.
50. What would be the best title of the passage?
A. The importance of seawater.
B. Life in the oceans.
C. How to protect food chains.
D. How to deal with seawater pollution.

根据句意和首字母或汉语提示，将单词的正确形式写在题中相应的横线上。

1.There’s nothing in this box. Look, it’s e______________.

2.If you are in danger, remember to dial (拨) the telephone n ______________ 110 at once.

3.— Do you know what the p ______________ of China is now?

— It’s over 1.3 billion.

4.The ice is too t ______________. It's very dangerous to skate on it.

5.It’s good for our health to g ______________ up early in the morning.

6.Last summer holiday, my teacher ______________ (介绍) Joy to me, and now we are close friends.

7.Jack is so smart that he can answer these questions ______________ (容易地) .

8.People will use robots to do the ______________ (家务) in the future.

9.Little Tom did quite well in the English exam. He hardly made any ______________ （错误） .

10.This is our new teaching building. It was  ______________（建造）last year.

Dear editor,
Mary is my friend and she is a very good-hearted girl. She’s always the first to help out others. But her habits make me mad sometimes and she just won’t change her ways. For most situations, that’s just fine with me, as I know it’s what make her who she is. However, sometimes it’s just so hard for me to bear her behavior. She has recently got a cellphone, but she often borrows mine to make calls. My phone has a chain with it. She always tries to open it like her own phone. I usually open it for her, but not always, as sometimes I’m driving my car, so she needs to get it out of my purse and open it herself.
This weekend we were at a party in a faraway village. She borrowed my cellphone. As it was cold outside, I let her take it outside without opening it. Now it’s broken because she didn’t open it properly. I wouldn’t be so mad, but over the weekend she also borrowed my car and never offered to pay for the gas, which made me very angry. She should have offered to pay for the gas. As I have mentioned, she’s the type to help out others when and where she can. Perhaps because of that, she thinks others should also do the same for her. Sometimes I just think she is very childish. I don’t want to hurt her, but I do want to let her know that not everyone can accept that. What should I do to let her know that?
Yours,
Lily
【小题1】What is Lily’s purpose in writing this letter?

 You’ve bought what you need. The grocery cashier asks, “Will that be paper or plastic? You reply “Plastic, please.”

This seems like a simple question and there are plenty of reasons we choose plastic: easier to carry, lighter than paper bags, possibly less damaging to the environment, less expensive to the shop owners, able to be used as trash bag, and so on. There are different opinions on plastic and paper. Now let’s follow the travels of 3 plastic bags. It begins at the grocery store with the customer’s choice.

Plastic Bag 1: As the waste engineer come by and pick up the trash, the first plastic bag falls out. It sits on a small street for a couple of hours until a car comes along and takes it down to the road. Then a gust of wind blows it across the road, then another car, then another gust of wind finally makes its way to the beach. Water fills the plastic bag and makes it look like a jellyfish. A seal(海豹) swims by, thinking it looks very interesting, and swallowed it. The plastic bag may stay in the seal’s stomach for months, maybe years. You see, our lovely animals have been living thousands of years in a world where everything can be eaten.

Plastic Bag 2: This bag does make its way to landfill(垃圾场). Before they have a chance to cover up the thousands of pounds of daily waste, a strong wind comes up and blows these plastic bags out of the landfill. Once the wind stops, workers will be sent to collect thousands of bags around. But they can’t possibly get them all. So our little bag continues his adventure getting caught in trees, eaten by birds or making its way to our lakes or rivers.

Plastic Bag 3: The last bag also blows away but is caught in a landfill where it sits for many years, as all the trash is wrapped in a big plastic bag, making natural degradation(降解) impossible. Although workers do much work to make sure water and air system won’t be polluted, some do. Guess what, plastic bags are made from petrol, a harmful waste material, which in one way or another makes its way to the environment.

Another problem with putting plastic bags in out trash is that our landfills for most cities may be filled in about 20 years. More importantly, since we are running out of land to build homes, you might have the pleasure of one day living on top of your plastic bags!

One of the best suggestions is not to use a bag at all or bring your own cloth bags. If you must, please choose paper bags, which, though not suggested, can be eaten by animals. And there are more opportunities recycle paper bags. It does take a little extra effort. But please have a thought about the little seal next time you say, “Plastic please.”   

1.According to the passage, what is NOT the reason for a customer to choose plastic bags?

A. He can use plastic bags to carry trash later.

B. He finds paper bags heavier than plastic bags.

C. He finds plastic bags more convenient to carry.

D. He can save money for plastic bags are cheaper.

2.The author describes the travel of Plastic Bag 1 to show ______.

A. seals like eating plastic bags around them.

B. seals really have a good stomach.

C. seals are potential victims of plastic bags.

D. seals are not able to differ plastic from food.

3.Wrapped in a big plastic bag, Plastic Bag3_____.

A. still does harm to the environment

B. can hardly be harmful to the environment

C. is much safer than Plastic Bag2

D. will end up being eaten by seals or some fish

4.What will the following part of this passage talk about?

A. Suggestions on reducing harm of plastic bags.

B. Disadvantages of using too many plastic bags.

C. Persuading people into using paper bags.

D. Other potential victims of plastic bags.

5.What is the overall tone of this passage?

A. Excited    B. Serious    C. Ironical   D. Casual