【正文】 ， in 1964， he set up another station on the ocean floor of the Red was the first undersea station to operate without help from the surface. Many countries are now studying undersea living. The former Soviet Union has an undersea laboratory in the Crimean United States has a laboratory 50 feet down on the ocean floor off the Virgin Islands. In 1970 five men lived there for two weeks. Then a team of five women scientists stayed in the laboratory. Next came other teams of men. All were there to explore the ocean depths and to make plans for the use of its resources. Scientists hope to find enough mineral， vegetable， and animal wealth there to provide food for the entire world. order to______ ， scientists are exploring below the surface of the ocean. A. know about the ocean water deep in the ocean B. stay down longer to study life of the plant and animal below the surface C. know about the plant and animal life deep in the ocean D. both A and C made the deepest dive?______ A. William Beebe. B. August Piccard. C. Jean Piccard. D. Cousteau. 3. Which of the following statements is true?____ A. The early divers could not stay down for very long. B. Up to now only five women scientists have stayed in the undersea laboratory. C. The purpose of setting up the undersea laboratories is to make plans for the use of the resources in the ocean. D. None of the above is true. B When one of your car tires goes flat, there are two things you can do, you can plain and change it or, if you don’t have a spare , stand helplessly beside the road and hope someone es to your rescue. Now es a third choice, called Quickwheel. It is designed to get disabled motorists rolling again as quickly as possible. Quickwheel is basically a tiny emergency trailer plete with three tough little wheels of its own that supports the flat tire and enables the motorists to drive to a service station without losing much time or expending much energy. The product is made in the US. Company, Quickwheel Inc. of Greenwich, Connecticut. According to the firm’s president, Robert Bockweg, the product meets each of the major worries that customers relate with flat tires: safe, lost time and physical labor. To use it, motorists simply unfold the product to its fully extended position, set it in front of the disabled tire, drive the car onto the Quickwheel’s ramp(斜板 ) and fix a special safety strap over the tire. The tire is then locked in Quickwheel’s metal frame. Its three wheels do the rest of the work. According to Quickwheel Inc, its product can be driven “for miles” at the speed of up to 45 miles per hour “without any noticeable change in the vehicle’s braking or steering operation”. The pany also says that it can be used on just about any type of car, jeep, mini—van or trailer.(拖車 ) Bockweg says that Quickwheel will be sold first in the United States, at a price of 150 dollars. Sales agreements now being talked over should make the product ready for use in Japan, Canada and Western Europe in the near future. 1. What does the underlined phrase “disabled motorists” probably mean? A. Motorists who can’t walk. B. Motorists who have disabilities. C. Drivers who can’t drive on because of a flat tire. D. Drivers who are hurt in an accident. 2. According to the information in the passage, Quickwheel _____. A. can be used to replace a flat tire. B. provides a kind of support to the flat tire for a short time. C. is able to move as quickly as a wheel. D. is as changeable and lasting as an ordinary wheel. 3 The purpose of writing this text is to ____