2021年1月23日发(作者：捐)







免费？宅在家学英语？怎么报名？

最牛英语口语培训模式：躺在家里练口语，全程外教一对一，三个月畅谈无阻！

洛基英语，免费体验全部在线一对一课程：
/ielts/
（报名网址）



Unit 20


Part II










Reading Comprehension
(35 minutes)
Directions:


There are 4 passages in this part. Each passage is followed by some
questions or unfinished statements. For each of them there are four choices marked A),
B), C) and D). You should decide on the best choice and mark the corresponding letter
on the Answer Sheet with a single line through the centre.

Passage One
Questions 21 to 25 are based on the following passage.







Navigation computers, now sold by most car-makers, cost $$2 000 and up. No
surprise, then, that they are most often found in luxury cars, like Lexus, BMW and
Audi. But it is a developing technology
—
meaning prices should eventually drop
—
and the market does seem to be growing.







Even at current prices, a navigation computer is impressive. It can guide you
from point to point in most major cities with precise turn-by- turn directions
—
spoken
by a clear human-sounding voice, and written on a screen in front of the driver.







The computer works with an antenna
（天线）
that takes signals from no fewer
than three of the 24 global positioning system(GPS) satellites. By measuring the time
required for a signal to travel between the satellites and the antenna, the car
’
s location
can be pinned down within 100 meters.







The satellite signals, along with inputs on speed from a wheel-speed sensor
and direction from a meter, determine the car
’
s position even as it moves. This
information is combined with a map database. Streets, landmarks and points of
interest are included.







Most systems are basically identical. The differences come in hardware
—
the
way the computer accepts the driver
’
s request for directions and the way it presents
the driving instructions. On most systems, a driver enters a desired address, motorway
junction or point of interest via a touch screen or disc. But the Lexus screen goes a
step further: you can point to any spot on the map screen and get directions to it.







BMW
’
s system offers a set of cross hairs
（瞄准器上的十字纹）
that can be
moved across the map (you have several choices of map scale) to pick a point you
’
d
like to get to. Audi
’
s screen can be switched to TV reception.







Even the voices that recite the directions can differ, with better systems like
BMW
’
s and Lexus
’
s having a wider vocabulary. The instructions are available in
French, German, Spanish, Dutch and Italian, as well as English. The driver can also
choose parameters for determining the route: fastest, shortest or no freeways(
说，
高速
公路
), for example.










免费？宅在家学英语？怎么报名？

21.


We learn from the passage that navigation computers








.
























A) will greatly promote sales of automobiles










B) may help solve potential traffic problems












C) are likely to be accepted by more drivers










D) will soon be viewed as a symbol of luxury














22.


With a navigation computer, a driver will easily find the best route to his
destination








.
A) by inputting the exact address



B) by indicating the location of his car
C) by checking his computer database



D) by giving vocal orders to the computer


23.


Despite their varied designs, navigation computers used in cars








.
A) are more or less the same price







B) provide directions in much the same way
C) work on more or less the same principles
D) receive instructions from the same satellites


24.


The navigation computer functions








.
A)

By means of a direction finder and a speed detector
B)


Basically on satellite signals and a map database
C)

Mainly through the reception of turn-by-turn directions
D)

By using a screen to display satellite signals


25.


The navigation systems in cars like Lexus, BMW and Audi are mentioned to
show








.
A)

the immaturity of the new technology
B)


the superiority of the global positioning system
C)

the cause of price fluctuations in car equipment
D)

the different ways of providing guidance to the driver
Passage Two
Questions 26 to 30 are based on the following passage.







“
The world
’
s environment is surprisingly healthy. Discuss.
”

If that were
an examination topic, most students would tear it apart, offering a long list of
complaints: from local smog
（烟雾）
to global climate change, from

the felling
（砍
伐）
of forests to the extinction of species. The list would largely be accurate, the
concern legitimate. Yet the students who should be given the highest marks would
actually be those who agreed with the statement. The surprise is how good things are,
not how bad.







After all, the world
’
s population has more than tripled during this century,
and world output has risen hugely, so you would expect the earth itself to have been
affected. Indeed, if people lived, consumed and produced things in the same way as
they did in 1900 (or 1950, or indeed 1980), the world by now would be a pretty