1 . No one knows for sure when a fire will happen, so it is     1    (extreme) necessary to make preparations before a fire starts. Check the fire escape equipment in advance and make sure that you can find    2    in the dark when lights have failed. Find out     3    the nearest fire extinguisher(灭火器) is and read the instructions to learn how     4    (use) it.
Don’t lose your head when a fire breaks out. First, telephone the fire department immediately when     5    fire just gets started. Take care not to be overcome by smoke,    6    can kill you quickly. Cover your mouth     7    a wet towel or cloth, and avoid getting into the smoke. Don’t get in an elevator, as you may get trapped if the electricity     8    (fail). If you can not get away     9    yourself, it is of great importance to hang something out of the window to attract attention as a sign of asking for help.
In short, if you make preparations before hand and take precautions(预防措施) during the fire, chances are that     10    will survive in case of a fire if it really breaks out some day.

2 . Like all big cities, Paris has a traffic problem: lots of cars, lots of traffic jams and lots of pollution from exhaust fumes (废气). So the city began a project to improve the situation.

Under the Velib project (‘Velib’ comes from velo liberty, or ‘bicycle freedom’) people can take a bicycle, use it for as long as they want, and then leave it at the same or another bicycle station. The first half-hour on the bike is free, but if you don’t return it after 30 minutes, you have to pay. But it’s only €1 a day or €29 a year! The bicycles are heavy (25 kg), and they are all gray and have baskets. There are about 20,000 of them in the city, and around 1,450 bicycle stations. So there are a lot more Velib stations than the 298 subway stations!

Paris is not the first city to have a project like this. But not everybody thinks it’s a great idea. One Parisian said, “These bicycles are only for short journeys. If people want to travel across the city, they won’t use a bicycle - they’ll still use their cars.”

A city spokesman said, “The bicycle project won’t solve all our traffic problems, of course. But it might help reduce air pollution. Traffic, together with factory fumes, is a big problem. There aren’t any simple answers to traffic problems and pollution in cities. But unless we do something now, there will be more traffic jams and temperatures will continue to rise, so the problems in our environment will get worse. The bikes might help people to lead a healthier life, too.”

1. What can we learn about the Velib project?

A．Its bikes have no baskets.	B．Its bikes are light and colorful.
C．It aims to make traveling easier.	D．It owns more stations than the subway.

2. If you use a Velib for 1 hour, you should pay       .

A．Free.	B．€1.
C．€29.	D．€30.

3. Why do some people disagree with the Velib project?

A．The cost is rather high.

B．It’s hard to find a Velib station.

C．It’s not suitable for a long journey.

D．The distance between two Velib stations is long.

4. What’s the city spokesman’s attitude towards the bicycle project?

A．Worried.	B．Positive.
C．Uncaring.	D．Doubtful.

3 . Energy goes from one plant or animal to another. A food chain shows how this energy moves. Each time an animal gets eaten, its energy is passed onto the animal that eats it. The food chain is very important because it keeps the balance of nature. If one part of the food chain disappears, it can affect all the other plants and animals. Any threat to the food chain is a threat to the environment’s biodiversit(生物多样性). The food chain helps keep animal populations in balance. However, if something happens to increase or decrease one of the links in the food chain, that balance is broken. If one animal becomes endangered, it puts all the animals above it at risk.
Some of the threats are natural, such as wildfires, hurricanes, tornados, floods and so on. But the biggest threats to the food chain come from you and me. These threats include overhunting, overfishing, logging, farming, development, pollution, etc. The food chain is endangered anywhere humans have had an effect on the natural environment.
A recent study shows that the overfishing of large sharks is damaging the food chain along the US Atlantic coast. Canadian and American scientists say sharks are being killed in great numbers for their meat and fins(鳍). Now, not enough sharks are around to eat the cownose(牛鼻) ray. The ray’s population has increased and they have eaten up the shellfish to the point where it has hurt commercial(商业的) fishing.
Many of us disturb the natural environment in our own backyards. It’s up to us to take care of the environment and try not to disrupt the natural food chain. If we don’t act responsibly, animals will start disappearing.
1. What can we learn from Paragraph 1?

A．The food chain is not easy to be broken.

B．The energy of an animal usually disappears when it dies.

C．Increasing the links will not break the balance of nature.

D．Breaking the food chain is bad for the biodiversity of the environment.

2. The study mentioned in Paragraph 3 proves that            .

A．human activities can be a big threat to the food chain

B．we are all responsible for the breaking of the food chain

C．natural disasters are hard to break the food chain

D．hunting large sharks for meat is beneficial

3. We can infer that the writer wrote this passage mainly to           .

A．explain what the food chain is

B．tell us something interesting about Nature

C．suggest that we stop eating meat to save animals

D．suggest that we not disrupt the natural food chain