What do we know about the "ghosting" from the passage？
A. It is a double image of TV.
B. It refers to the speed of light.
C. It was eventually solved by engineers.
D. It refers to the speed of the radio signals.
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A．It is a serious throat to its competitors.B．It is not powerful enough to affect the
A. It is a serious throat to its competitors.
B. It is not powerful enough to affect the world market.
C. The cars' quality is good enough to have their own branding.
D. None of the Chinese cars meet the standard in the US.
A．He was remembered because he was once a brave soldier.B．He was remembered because he
A. He was remembered because he was once a brave soldier.
B. He was remembered because he took many war photographs.
C. He was remembered because he painted great portraits.
D. He was remembered because he designed a portable camera.
In 1948, people living in remote areas could see TV programs by ______ in the United States.
A. a "line of sight"
B. transmitting antenna
C. frequencies allotted to television
D. putting antennas on hills and running cables to houses
A．She left the lecture for a few minutes.B．She was reading during the lecture.C．She ma
A. She left the lecture for a few minutes.
B. She was reading during the lecture.
C. She may have fallen asleep.
D. She misunderstood the speaker's last points.
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