The Space Age commenced in October 1957 when the first ______ satellite was launched by the Soviet

A . arranged as close to each other as possible to save space B . arranged far away from each other for convenient operation C . be fixed or clamped to avoid vibration D . kept easy removable as to convenient repairing work

A . pretend B . extend C . contend D . intend

A . successful B . maior C . outstanding D . musical

A . midnight B . noon C . beginning of the watch D . any convenient time

A . Oracle Configurator B . Oracle General Ledger C . Application Object Library D . Oracle Human Resource

A . lies between dura matter and arachnoid B . up to subarachnoid space in the skull by the foramen magnum C . down the the height of the fifth sacral vertebral D . terminal cistern is formed by the space below the second sacral vertebral E . the fluid in it can communicate with that in the center canal of spinal cord directly

A . smoke density has been decreased sufficiently to see the bulkhead opposite the compartments entrance B . a lifeline and explosion proof flash light are used C . all smoke and toxic fumes are removed and an adequate oxygen supply is present D . overhaul has been completed to remove any possible source of re-ignitio

A . be responsible B . not be responsible C . pay the Shipowner for the expenses incurred D . not claim the Shipowner for the expenses incurred

A . near B . short C . close D . small

A．compelling B．compulsory C．obliged D．compulsive

The journey to the moon has been the first step towards future explorations in space. The distance between the moon and the Earth is very short indeed when compared with the distances between Earth and the other planets. Mars, the nearest planet to Earth is of miles away ! Traveling to the planets or travels between planets will be man’ s next aim. Such travels will be more difficult than the trip to the moon and certainly more exciting. Recently, two American unmanned spacecraft, Vikings 1 and 2, landed on Mars in an attempt to discover whether that planet had any life on it. So far the presence of life on Mars has neither been proved nor ruled out. Russian space-probes have discovered that the surface of Venus is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus is extremely, dense and the pressure is nearly a hundred times greater than the pressure of the Earth’s atmosphere. Scientists believe that in the future, space stations can be built in space. These stations can act as stop-over points in space. Spacecraft can refuel at these stations and get their supply of air, food and water. Spaceships of the future will be bigger and faster. They will be able to carry passengers for trips to the moon or planets. Man may in the future find planets which have the same conditions as those we have on Earth, and make them his home. However such a possibility is still in the distant future. At the same time, Man should realize that the Earth will be his only home for a long time and begin to value and care for it. Which of the following statements is true？ A．Recently, two American astronauts have landed on Mars. B．The surface of Mars is very hot. C．The journey to the moon started the future exploration in space. D．There is life in Venus.

A．To suggest that most of the ancient Greeks were wealthy B．To show that the period was a high point in Greek civilization C．To argue that Greece was the only society with a political system D．To explain why the population of Greece was growing rapidly

是 否

Impressive and complex 13 it may appear, the rocket, which was invented in China over 800 years 14 , is a relatively simple device.Fuel that is burned in the rocket engine changes 15 gas.The hot and rapidly expanding gas must escape, but it can do so only 16 an opening that faces backward.As the gas is 17 with great force, it pushes the rocket in the 18 direction.Like the kick of a gun when it is fired, it 19 the laws of nature described by Sir Isaac Newton when he discovered that“ 20 every action, there is an equal and opposite reaction.” 11.A.shown B.been C.appeared D.proved 12.A.send B.land C.take D.carry 13.A.that B.so C.as D.sometimes 14.A.in advance B.before C.earlier D.ago 15.A.as B.into C.for D.the 16.A.in B.at C.by D.through 17.A.transmitted B.dispersed C.erected D.radiated 18.A.same B.other C.opposite D.wrong 19.A.states B.proves C.follows D.breaks 20.A.like B.as C.with D.for