In the 1950s, desktop computers were invented in the same country. 可知发明台式电脑的科学家来自美国,故选B。 由第三栏中It was as big as a room. It improved the speed and exactitude of calculation.可知它有一个房间那么大。它提高了速度和精确
"以及“In the 1950s,desktop computers were invented in the same country. "可知,第一台现代化的电脑和台式电脑都是在美国发明创造出来的。19.A点拨:细节理解题。细读法。由原文中的“Itimproved thespeed and exactitude of calculation(计算)."可知:第一台现代化的电脑是被用来提高计算的速度和准确度的。
NASA has invented all sorts of technology to solve the peculiar problems of space exploration. In the 1950s and early 1960s, it created the revolutionary three-axis stabilization control design that enables satellites to point their antennas, instruments and solar panels with precision. Since then,...
In thepostwar America of the 1950s, many changes for consumers were afoot. New on the scene in this decade:credit cards, power steering, diet soft drinks, music synthesizers, and transistor radios. The baby boom generation made hula hoops a craze, and theBarbie dollbegan her decades-long, ...
NASA has invented all sorts of technology to solve the peculiar problems of space exploration. In the 1950s and early 1960s, it created the revolutionary three-axis stabilization control design that enables satellites to point their antennas, instruments and solar panels with precision. Since then,...
(3)B.细节理解题.根据第三部分"The first modern computer was invented in America in 1946…In the 1950s,desktop computers were invented in the same country."可知是美国的科学家发明了台式计算机.故选B.(4)A.细节理解题.根据第三部分 It was as big as a room.It improved the speed and ...
For the first time ever, it became possible to tell the time. In the 1950s a copy was built and this copy can be seen today in Beijing. They say that a man called Cai Lun made paper from the bark of a tree in about 105 AD. If so, he is a man of whom China can be proud....
In 1930, Baird made the first public broadcast of a TV show, from his studio to the London Coliseum Cinema; the screen consisted of a 6-ft by 3-ft array of 2,100 tiny flashlamp bulbs. Baird developed a color television in 1928, and a stereo television in 1946. Baird’s mechanical ...
NASA has invented all sorts of technology to solve the peculiar problems of space exploration. In the 1950s and early 1960s, it created the revolutionary three-axis stabilization control design that enables satellites to point their antennas, instruments and solar panels with precision. Since then,...
generating huge amounts of energy. He went on to develop the first nuclear chain reaction at the University of Chicago. This successful experiment led to the development of several nuclear plants in the 1950s, withIdaholaunching the first nuclear plant in 1951 with electricity produced from atomic...