Read the article and select the best answer. Article: winter-swimming has become popular in Beijing. three years ago, few people would go swimming in the city waters. but now there is a winter-swimming enthusiasts'club and it has more than 2,000 members. the oldest is 84 years of age and the youngest is only 7. _ They may be workers, peasants, soldiers, teachers, students....Though it is now the coldest part of the season and the water temperature in the city's lakes is around 0degc, many winter-simmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes. why are so many people interested in winter-swimming? Because winter-swimming can be good for one's health. Bei Sha is a good example. He is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health. Question: Guess what "the members are from all walks of life" means _ . Options: A: The members do different jobs at different places. B: They come from all parts of Beijing. C: They are persons of different ages. D: They are men and women , old and young.
A

Read the article and select the best answer. Article: Zero gravity looks cool. But what about the thing no one likes to talk about? Yes, that is right: going to bathroom. Zero gravity makes this everyday task quite a challenge. Astronauts have to be toilet-trained all over again. The Apollo astronauts raised themselves off the seat of their chairs and stuck a clear plastic bag to their back sides with sticky strips. A second astronaut watched closely to be sure no waste matter escaped the seal. (You would not want that stuff floating around the cabin!) When the deed was done, the astronaut cleaned up with a piece of plastic attached to the inside of the bag, removed the bag, dropped a disinfectant pill in with the waste matter, and put the whole thing, sealed, into a special container. Donald W. Rethke, an engineer for Hamilton Standard Space Systems, developed a more private way to answer nature's call: the space toilet. It is somewhat like the kind of toilet one would find on commercial airplanes --- with unique adaptations for zero gravity, of course. For instance, it has thigh bars that keep the astronaut from floating off the seat. The astronaut (male or female) defecates in a bag and urinates in a hose. Solid and liquid wastes are kept separated because at least 85% of the urine is recycled and, yes, after careful filtration, used for drinking and other purposes. (Water is always in demand in space.) A vacuum sucks the waste materials into the toilet, where the waste is compacted into hamburger-like patties for easy storage. Although not exactly like an earthbound visit to the toilet, it is at the very least much more private than in the early days of space travel. Question: What can be inferred from the fact that most of the astronauts' urine is recycled? Options: A: The recycled water tastes better. B: Water is limited on the space shuttle. C: It is very convenient to get their urine recycled. D: Space science includes recycling urine.
B

Read the article and select the best answer. Article: Welcome to Pocono Whitewater There's something fun here at Pocono Whitewater for every level of adventurer! We have mild to wild whitewater rafting , family trips, and birdwatching boating. Choose one adventure now. It's up to you! We have trips available daily. Give us a call today! Dam Release Whitewater Rafting Experience the best whitewater on the Lehigh River! Surrounded by forests and mountains, you will enjoy 12 miles and 5 hours of Class III whitewater rafting and outstanding scenery. This is a fun and thrilling trip that everyone over the age of 12 can make. While paddling in the swift water, you'll shout and laugh. Dam Release Whitewater Rafting Rates: Individual (over the age of 12) : $61.00 Group (at least 8 persons) : $31.00 Rates Include: all necessary rafting equipment, life jackets, free parking, bus service to/from the river and professional river guides. Family Style Whitewater Rafting Bring along the whole family this summer and enjoy 8 miles and 5 hours of Class I whitewater rafting. Mild water of the Lehigh River is simply perfect for beginners, school groups, and kids aged 4 and older. This is just perfect for enjoying the passing scenery, kicking your feet over the edge of the raft, or taking a swim in the river! One of the most unique things about this trip is a free riverside barbeque ! Our workers will cook and serve you a picnic lunch -- hotdogs, potato salad, fruit, etc. The classic family picnic! Family Style Whitewater Rafting Rates: Adult: $39.00 Child (aged 4--14) : $33.00 Group (at least 8 persons) : $30.00 Rates Include: all necessary rafting equipment, life jackets, free parking, bus service to/from the river, and a barbeque lunch, river guides not included. Question: If ten college students are to participate in the Dam Release Whitewater Rafting, how much money will be paid in total? Options: A: $310. B: $330. C: $390. D: $610.
A

Read the article and select the best answer. Article: Macao, also called Macau, is on the western side of the Pearl River entrance, at the head of which is the Chinese port of Guangdong and it stands opposite Hong Kong which is on the eastern side of the entrance. It is made of a small narrow peninsula sticking out from Guangdong province. The total area of Macao is about 21.45 square kilometers, and it is made up of three parts: Macao Peninsula, Dingbat Isle and Lehman Isle. Between Macao Peninsula and Dingbat Isle there are two bridges which join the two parts together, and there is also a highway between the Dingbat and Lehman Isles. Therefore, two bridges and one highway make the three parts of Macao into an integrated region . Macao faces to the vast sea and its back is the Pearl River Delta. The two big cities, Hong Kong and Guangzhou, and the two special economic zones Hula and Shenzhen are its neighbors. All of this offers much advantage for its economic development. Macao has a population of about 450, 000. This is very large against the size of the area. The average population density reaches 20, 000 per square kilometer. It is one of the densest population regions in the world. The majority of its people are Chinese, who make up 96% of the whole population. Question: In Macao there are only about _ people who are not Chinese. Options: A: 18,000 B: 20,000 C: 21,450 D: 428,000
A