*Question*
Read the article and select the best answer. Article: Taking away a city's rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is made up of things we can't eat or use. If we kept these things we would soon have a mountain of rubbish. In some cities the rubbish is collected and taken outside of the city to a dump . Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into small pieces and sent into the sewage system. The _ system takes away the used water from toilets, bathtubs and other places. To keep mice and flies away, some earth is used to cover the newly dumped rubbish. Later, grass may be planted on the rubbish-filled land. Finally, a house or a school may be built there, and then you'd never know that this had once been an old rubbish dump. In other cities the rubbish is burnt in special places. The fire burns everything but the metal. Sometimes the metal can be used again in factories where things are made of metal. The food parts of rubbish are put in special piles where they slowly change into something called humus , which looks like black earth. It is rich with kinds of things that feed plants and help make them grow. Question: According to the passage, the food parts of rubbish can be used again _ . Options: A: to feed animals B: to feed plants C: to build a house D: to make machines
**Answer**
B

*Question*
Read the article and select the best answer. Article: Tired of visiting places of historic interest around the world? Then how about a holiday in space? Recently, Russia has announced plans for a hotel in space. The dream of staying in space will soon come true. The space hotel will open in2016. Experienced guides will go with tourists together. The food will be prepared on Earth and sent up on the rocket. When tourists want to eat, the food can be heated again in microwave ovens .One can have tea, water and fruit juices in the space hotel, but alcohol will not be allowed. Toilets will use flowing air instead of water to move waste, and waste water will be recycled. The hotel will be"far more comfortable"than the International Space Station(ISS,)used by astronauts. It will house seven guests in four cabins. Tourists there can enjoy the views of the Earth through huge windows. They may also meet unexpected guests such as astronauts from the ISS, if those astronauts get in trouble. But it's not easy to get to the hotel. It will take two days to send tourists there and a five-day stay will cost you 100,000 dollars. Question: If you want to stay in the space hotel for five days, you'll spend _ dollars. Options: A: 1,000 B: 100 C: 10,000 D: 100,000
**Answer**
D

*Question*
Read the article and select the best answer. Article: A crow is about twenty inches long and black all over. Crows are dirty birds because they live on bad food. Crows eat a lot of waste food. In this way they are more useful to us than any birds. They clean up the dirty things in our streets. Crows are always hungry. They look for food all day, and in the evening you can see them in large numbers flying back to their nests in the trees. They sleep there at night. Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. Sometimes they talk together, and sometimes they do it by turns like human beings . It is easy to tell from crow's sound if they are pleased or angry. Perhaps crows talk a lot because they are friendly birds. A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and some time later it dies too. Question: Crows are more useful to us because they _ . Options: A: are clean birds B: can move away waste food C: can make our streets clean D: aren't dirty
**Answer**
B

*Question*
Read the article and select the best answer. Article: Scientists say life will be very different in 2050. First,there will be no TV channels in 2050.People will choose a program from a computer and watch it on TV.In 2050,we will get information from the computers only. Second,water will be a big problem in 2050.In many places,people won't have water to drink. Third,cars will use new and clean fuels and they will go very fast.There will be a computer in every car.And the computers will control the cars and there won't be any accidents . Question: The cars will be _ in the future. Options: A: very cheap B: very light C: very expensive D: very safe
**Answer**
D