[单项选择]

Although there had been various small cameras developed, it was not until George Eastman introduced the Kodak in 1888 that the mass appeal of photography attracted America and Europe and thereafter spread quickly to the far corners of the earth. Eastman called his new famous camera the Kodak for no particular reason except that he liked the word. It was easy to remember and could be pronounced in any language.
An immediate consequence of Eastman’s invention was a blizzard of amateur photographs that soon became known as snapshots. The word came from hunters’ jargon. When a hunter fired a gun from the hip, without taking careful aim, it was described as a snapshot. Photographers referred to the process of taking pictures as shooting, and they would take pride in a good day’s shoot the way country gentlemen would boast about the number of birds brought down in an afternoon.
Photography became not only easy but fun because of the Kodak. Almost overn
A. celebration.
B. one hundred years.
C. a noteworthy year.
D. an annual celebration.

[单项选择] Although there had been various small cameras developed, it was not until George Eastman introduced the Kodak in 1888 that the mass appeal of photography attracted America and Europe and thereafter spread quickly to the far corners of the earth. Eastman called his new famous camera the Kodak for no particular reason except that he liked the word. It was easy to remember and could be pronounced in any language. An immediate consequence of Eastman’’ s invention was a blizzard of amateur photographs that soon became known as snapshots. The word came from hunters’’ jargon. When a hunter fired a gun from the hip, without taking careful aim, it was described as a snapshot. Photographers referred to the process of taking pictures as shooting, and they would take pride in a good day’’s shoot the way country gentlemen would boast about the number of birds brought down in an afternoon. Photography became not only easy but fun because of the Kodak. Almost overnight photography bec
A. It made the work of professionals more enjoyable.
B. It made picture-taking suddenly popular among ordinary people.
C. It marked the beginning of manufacturing small cameras.
D. It met the need of photographers in America and Europe.

[单项选择]Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1953, a former electronics engineer in his fifties, Christopher Cockerell, who had turned to boat-building on the Norfolk Broads, suggested an idea on which be had been working for many years to the British government and industrial circles. It was the idea of supporting a craft on a "pad", or cushion, of low-pressure air, ringed with a curtain of higher pressure air. Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles—for it is something in between a boat and an aircraft. As a ship builder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface’s power and limits its speed. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number o
A. a hovercraft can not fly high because of the surrounding high-pressure air
B. a hovercraft is as much in use as a plane
C. a hovercraft "flies" with a greater speed than ships
D. a hovercraft also has the problem of wave resistance