[单项选择]Such electron tubes ______ in a radio set are also found in a TV set.
A. that we use
B. as we use
C. as we use them
D. that we use them

[单项选择]Such electron tubes ______ in a radio set are also found in a TV set.
A. that we use
B. as we use
C. as we use them
D. that we use them

[单项选择]Such electronic devices（）are used in a radio set can also be found in a computer.
A. in which
B. that
C. which
D. as

[单项选择]

Because noises modulate radio frequency, radio stations use a band of frequencies to prevent interference with other stations.（）

A. govern
B. adapt
C. temper
D. renovate

[单项选择]Cox Radio, one of the nation's largest radio chains, plans to ______ its ties with independent record promoters to distance itself from a payola-like practice that runs rampant in the music business.
A. consolidate
B. tout
C. sever
D. splash

[单项选择]

Text 1
At last weekend’s consumer-electronics show in Las Vegas, digital convergence arrived with a vengeance. Among the avalanche of new products were lots of mobile phones. Those fitted with digital cameras and camcorders are hardly new, but they now take even better pictures. Others can be used to play three-dimensional video games. Download movies, watch live TV (and record it during an incoming call), operate home-security systems and listen to music files downloaded from the internet. More marvels are on the way. In the midst of this frenzy of new and unfamiliar gizmos, product features would seem to count for everything. But companies in the hypercompetitive electronics industry are discovering something unexpected, and curious: brands matter almost as much as dazzling new technology.
One of the clearest demonstrations of this is South Korea’ s Samsung Electronics, which made a big splash this year in Las Vegas. Samsung was once best know
A. the location of production carried much weight.
B. brand has always exercised its decisive role.
C. great changes used to take place in markets.
D. a guarantee of quality equals a strong brand.

[单项选择]Tympanostomy tubes are meant to ______.
A. dissolve slowly.
B. replace medicines.
C. alleviate eardrum pressure.
D. reduce earaches.

[单项选择]How is television different from radio
A. Sound is changed into electromagnetic waves.
B. Light is changed into electromagnetic waves.
C. Both sound and light are changed into electromagnetic waves.
D. Either sound or light is changed into electromagnetic waves.

[单项选择]Because noises modulate radiofrequency, radio stations use a band of frequencies to prevent interference with other stations.（）
A. govern
B. adapt
C. temper
D. renovate