[单项选择]Dolly is exactly the same as an ordinary lamb.

[单项选择]Dolly will live longer than an ordinary lamb.

[单项选择]

These circumstances were farfrom being ordinary and Smith had a （）reason for being here personally.

A. twofold
B. couple
C. bilateral
D. doubling

[单项选择]Space enthusiasts look to the day when ordinary people, as well as professional astronauts and members of Congress, can leave Earth behind and head for a space station resort, or maybe a base on the moon or Mars. The Space Transportation Association, an industry lobbying group, recently created a division devoted to promoting space tourism, which it sees as a viable way to spur economic development beyond Earth. The great stumbling block in this road to stars, however, is the sheer difficulty of getting anywhere in space. Merely achieving orbit is an expensive and risky proposition. Current space propulsion technologies make it a stretch to send probes to distant destinations within the solar system. Spacecraft have to follow multi-laver, indirect trajectories that loop around several planes in order to gain velocity from gravity assists. Then the craft lack the energy to come back. Sending spacecraft to other solar systems would take many centuries. Fortunately, engineers have no shortage of inventive plans for new propulsion systems that might someday expand human presence, literally or figuratively, beyond this planet. Some are radical refinements of current rockets or jet technologies. Others harness nuclear energies or would ride on powerful laser beams. Even the equivalents of "space elevators" for hoisting cargoes into orbit are on the drawing board. "Reach low orbit and you are halfway to anywhere in the Solar System", science-fiction author Robert A. Heinlein memorably wrote, and virtually all analysts agree that inexpensive access to low Earth orbit is a vital first step, because most scenarios for expanding humankind"s reach depend on the orbital assembly of massive spacecraft or other equipment, involving multiple hunches. The need for better launch systems is already immediate, driven by private and public sector demand. Most commercial payloads are destined either for the now crowed geo-stationary orbit, where satellites jostle for elbow room 36,000 kilometers above the equator, or for low-Earth or bit, just a few hundred kilometers up. Low-Earth orbit is rapidly becoming a space enterprise zone, because satellites that close can transmit signals to desktop or even handheld receivers. Scientific payloads are also taking off in a big way. More than 50 major observatories and explorations to other solar systems" bodies will lift off within the next decade. The pressing demand for launches has even prompted Boeing"s commercial space division to team up with RSC—Energia in Moscow and Kvaerner Maritime in Oslo to refurbish an oil rig and create a 34,000—ton displacement semi-submersible launch platform that will be towed to orbitally favorable launch sites.The passage is mainly about______.
A. the development of space technology
B. the obstacles and prospects of space transportation
C. the public interests in space travel
D. the growth of space business

[单项选择]

The original experiment cannot be exactly duplicated.  

A. reproduced
B. invented
C. designed
D. reported

[单项选择]As ordinary people, scientists are by no means more honest or ______ than other people, but as scientists, they attach special value to honesty while they are in their working sphere.
A. ethical
B. ethnic
C. aesthetic
D. esthetic

[单项选择]Why was the ordinary woman's leather shoe considered unusual


A. Because it is an important clue to life in the past.
B. Because it was found near a famous trail.
C. Because it once belonged to a VIP.
D. Because it was a fashionable shoe at that time.

[单项选择]Nobody was clear about how exactly he had managed to ___________ such a vast amount of money in such a short time.


A. gather
B. increase
C. profit
D. accumulate

[单项选择]What kind of translation is exactly expected by the author of this passage


A. Machine translation of documents.
B. Desktop PC software translation programs.
C. Machine translation of programs on the net.
D. Translation services on the net.

[单项选择]The patients believe that Dr. Smith knows exactly how to put them ______.
A. right
B. correct
C. well
D. straight

[单项选择]Cancer of the liver, if malicious, in ordinary （）, will surely lead to death.
A. fashion
B. manner
C. practice
D. parlance

[单项选择]What does Julia exactly expect of her advice to Larry at the end of the conversation


A. He would follow suit.
B. He would be sure of himself.
C. He could make prompt decision.
D. He would be ashamed of himsel

[单项选择]What does a man do when he cannot get exactly what he wants


A. He buys a similar thing of the colour he wants.
B. He usually does not buy anything.
C. At least two of his requirements must be met before he buys.
D. So long as the style is right, he buys the thing.

[单项选择]

If we were asked exactly what we were doing a year ago, we should probably have to say that we could not remember. But if we had kept a book and had written in it an account of what we did each day, we should be able to give an answer to the question. It is the same in history. Many things have been forgotten because we do not have any written account of them. Sometimes men did keep a record of the most important happenings in their country, but often it was destroyed by fire or in a war. Sometimes there was never any written record at all because the people of that time and place did not know how to write. For example, we know a good deal about the people who lived in China 4 000 years ago, because they could write and leave written records for those who lived after them. But we know almost nothing about the people who lived even 200 years ago in central Africa, because they had not learned to wrtie.
Sometimes, of course, even if the people cannot write, they may know so
A. kept a written record of every past event
B. not burnt their written records in wars
C. told exact stories of the most important happenings
D. made more songs and dances