Today television
is one of the most popular forms of entertainment (娱乐) in the home. Some people
in places where television reception is good may think that television has taken
the place of radio. Television, however, is actually a kind of radio. It uses
special equipment for sending and receiving the picture. The television sound
system uses the same type of equipment that is used in other forms of
radio. Exchanging messages with ships at sea was one of the
first uses of radio. Modem radio is still used for this purpose and for
communication across oceans. On land too radio provides a means o{ instant
communication even with moving vehicles (车辆) such as taxicabs or service
trucks. Police forces use two-way radio to get information to
and from officers in squad cars (警车) and on motorcycles. Small portable (手提式的)
sets make it possible to communicate with a central exchange while walking or
riding in a city or over a countryside. Observers in airplanes can report
traffic accidents and traffic jams by radio to police officers on the
ground. Radiotelephones are used in many places. Connection
with the regular telephone service can be provided for boats, trains, and cars.
Isolated places in deserts, forests, and mountainous regions are linked by
radiotelephone in many parts of the world. Thus by means of radio people can
communicate with others wherever service is provided.
单选题
According to the passage, television ______.
A. has taken the place of radio
B. is no longer popular in the home
C. can be regarded as a kind of radio
D. has nothing in common with radio
【正确答案】
C
【答案解析】[解析] 短文(C)第1段第3句说明，虽然有些人认为，电视已经取代了收音机，然而电视实际上是一种收音机(Television，however，is actually a kind of radio)。答案C)与此相符。
单选题
In paragraph two, "this purpose" refers to ______.
A. exchanging messages with ships at sea
B. communication across oceans
C. sending and receiving the picture
D. instant communication with moving vehicles
【正确答案】
A
【答案解析】[解析] 第2段第2句提到现代的收音机仍然用于此目的(…still used for this purpose)，而第一句说明了这个用途的具体内容是与海上的船只交换信息(exchanging messages with ships at sea)。因此，答案是A)。
单选题
Modern radio is used in many ways. Which of the following is NOT
mentioned in the passage?
A. At sea.
B. On land.
C. In the air.
D. Underground.
【正确答案】
D
【答案解析】[解析] 第2段第1句无线电用于与海上的船只交换信息(with ships at sea)，因此，A)提到；第2句提到无线电在陆地上的用途(on land)，因此，B)提到；第3段第3句提到在飞机上的用途(observers in airplanes can report t traffic accidents and traffic jams by radio…)，因此，C)也提到了。利用排除法，D)就是答案。
单选题
The word "isolated" in the last paragraph means ______.
A. sandy and mountainous
B. clean and not polluted
C. without any living things
D. separated or distant
【正确答案】
D
【答案解析】[解析] isolated这个词的意思可以根据上下文推测。在沙漠、森林和山区，需要用无线电电话连接(Isolated places in deserts，forests，and mountainous regions are linked by radiotelephone)。这些地区都是孤立或遥远的地方。因此，答案是D)。