After an extra day in space,the crew of Discovery returned to Earth,landing at Edwards Air Force Base in California early on Tuesday morning.The shuttle and its crew spent two weeks in space,most of it aboard the International Space Station.It was the first flight of NASA's space?shuttle fleet since February 2003,when the shuttle Columbia came apart while re?entering Earth's atmosphere.?
NASA officials delayed Discovery's return for one day because of cloudy weather in Florida,where the shuttle was supposed to lanD. On Tuesday morning,mission controllers ?directed? Discovery to a landing site in California,where the skies were clear.The crew members will have to wait until Wednesday to see their families when they all meet together in Houston at the Johnson Space Center.?
Discovery had a very busy mission in space,compared to past missions.The space shuttle docked with the International Space Station most of the journey,delivering badly needed ?supplies? and repairing damaged parts.The crew spent a lot of time testing new repair techniques on their own shuttle,conducting three different spacewalks(where astronauts exit the space shuttle to do work outside).On the third spacewalk,astronaut Steve Robinson went underneath the shuttle to remove material sticking out from between the spacecraft's ?protective? tiles.?
There were concerns in the last remaining days of Discovery's mission that a torn heat blanket—another shield against overheating in the space shuttle—may pose a problem to crew members. NASA officials and technicians worked on ways that the crew could fix the problem, but later decided it was not a risk.?
With the shuttle and its crew safely back on firm ground, NASA is hailing this mission, labeled STS?114,as a huge success. “I hope this shows people that we're coming back,” NASA spaceflight chief Bill Readdy said after Discovery's successful landing. “We've got some more work to do. We know what we need to do and we'll do it.?
小題1:Which of the following isn't included in the jobs of the shuttle Discovery?
A.Delivering supplies to the International Space Station.?
B.Conducting different spacewalks.?
C.Testing new repair techniques.?
D.Finding the cause why the shuttle Columbia came apart.?
小題2:But for the cloudy weather, the shuttle Discovery would have landed_______.
A.in Florida a day earlierB.in Florida a day later?
C.in California a day earlierD.in California a day later?
小題3:Which is the most probable period of time that Discovery was aboard the International Space Station?
A.Six days.B.Two weeks.?
C.Nine days.D.Two weeks and an extra day.?
小題4:What's the best title for the passage?
A.Another Huge Success of Discovery
B.Welcome Back, Discovery?
C.Discovery and International Space Station
D.Discovery Survives a Risk

小題1:D
小題2:A
小題3:C
小題4:B

小題1: 細節(jié)歸納題。根據(jù)第三段第二句和第三句話可知:尋找“哥倫比亞號”航天飛機解體的原因不在其例。?
小題2: 推測題。根據(jù)第二段第一句反推可知:要不是天氣原因,“發(fā)現(xiàn)號”航天飛機會早一天降落在佛羅里達州。?
小題3:推測題。根據(jù)短文第一段第二句話和第三段第二句話可知:“發(fā)現(xiàn)號”航天飛機此次飛行的兩個星期中絕大部分時間是?吭趪H空間站上。由此推斷“九天”最可能。?
小題4:主旨題。根據(jù)短文首句“the crew of Discovery returned to Earth”及全文意思用“Welcome Back, Discovery(發(fā)現(xiàn)號,歡迎你凱旋歸來)”最能概括全文。
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The deepest oil well enters a mere six miles into the crust (地殼) (the center of the earth is about 4,000 miles deeper). Russian scientists dug the deepest hole in Siberia, but bottomed out at about 7.5 miles below the surface. The Mohole project, a U.S. plan in the 1950s, called for drilling a hole 25 miles down to the boundary between the hard rocks of the crust and the soft mantle (地幔). Sadly the project involved government supporting.
It gets harder and harder to drill deep into the earth because rocks get softer and softer. Hard but easily broken at the surface, rocks become plastic at depth, and the pressure caused by the weight of the overlaying crust ---  about 52,800 pounds per square inch at a depth of ten miles, makes further drilling impossible.
What little we know about the inside of the earth (like the fact that there's a crust, a mantle, and a core) comes from indirect evidence, such as the analysis of earthquakes.
So maybe it's time for a thorough new method to explore the earth's inside. Scientist David Stevenson says we should forget about drilling holes. Instead, we should open a crack (裂縫).
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Stevenson compares his idea to space exploration. "We're going somewhere we haven't been before,"he says. "In all possibility, there will be surprises.”
This idea can probably be put in the drawer marked with Isn't Going To Happen. The robot would have to survive temperatures that would melt pretty much anything. But Stevenson's idea may inspire a new look at an old problem. Great things can come from what seems like impossible ideas.
小題1:Going inside the earth is _____ than going into space.
A.more interestingB.more possibleC.easierD.more challenging
小題2:How deep have we gone into the earth until now?
A.6 miles.B.4,000 miles.C.7.5 miles.D.25 miles.
小題3:Which of the following is TRUE about David Stevenson's idea?
A.It is an inspiring but not practical idea now.
B.It is a practical proposal that has come into use now.
C.It is a good proposal that will soon be put into practice.
D.It is a false theory that cannot be carried out at all.
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