Passage two
A new kind of radar has been developed for space-age travelers. A working laboratory model of a new system of radar that makers use of a beam of light is said to be ten thousand times more accurate than the best comparable system of radar that uses microwaves.
The model has shown that this radar system can measure with absolute precision speeds varying from spaceship orbital injection velocities of five miles per second down to virtual stops-speeds of less than one ten-thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could rip(划破) open a ship's skin, or a nudge could knock the station out of its orbit.
The light-beam radar, which operates at a frequency of trillions(万亿) of cycles per second, could easily dete
A. is the first radar system to work in space
B. is more precise than microwave radar
C. is easier to operate than microwave radar
D. will work on the earth's surface as well as in space
| In the 1997 general-election campaign,
"Education, Education" was Tony Blair’s pet phrase. Time changes quickly.
Education is going rapidly out of fashion. "Learning" (to be exact, "lifelong
learning" ) is New Labour’s new buzzword (时髦语). The shift from "education" to
"learning" reflects more than a change of language. It stems from both
educational research and left-wing ideas. During the 1980s, British
educationalists got some new American ideas. One was the notion that traditional
examinations do not test the full range of people’s abilities. Another was the
belief that skills are not necessarily learned from teachers in a conventional
classroom. People can pick them up in all sorts of ways. All this echoed left-wing ideas that traditional teaching methods were not sufficiently adaptable to the needs of individual learners. A A. is but a change of language B. reflects the traditional ideas in education C. reflects the government’s wish to restrict choices D. is not just a change of language [简答题]John Black, a new client, who has been a chargeable person for a number of years, has asked you to explain the following, with reference to income tax.(a) The rules applicable in determining the amount of preliminary tax to be paid for the tax year 2008. (3 marks)
[填空题]Their new advertising campaign has been very______(success).
我来回答: 提交
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