couldn't make the helicopter . didn't have jet planes( ) 4. New ways were found to help people get over diseases . . in the 1920s . in the 1930s . in the 1940s . in the 1950s( ) 5. Which of the four countries took the first step to go into space? . Russia. . China. ...
根据“The first modern computer was invented in America in 1946.”以及句子“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被发明出来的。故选D。 (4)题详解: 细节理解题。根据“It improved the speed of calculation (计算). ”...
The first modern computer was invented in America in 1946. It was as big as a room. It improved the speed and exactitude of calculation(计算). In the 1950s, desktop computers were invented in the same country. They became smaller and could be put on the desk. Since then, they have be...
Computer The first modern computer was invented in America in 1946.It was as big as a room.It improved the speed and exactitude of calculation (计算).In the 1950s,desktop computers were invented in the same country.They became smaller and could be put on the desk.Since then,they have bec...
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, ...
(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 ...
Finally, in the 1950s, scientists decided that something must be done. The first part of their plan was to remove as many cats, dogs and other animals as they could from the islands. Next, they tried to make sure that more baby tortoises would be born. This slow, hard work contin...
First used in the 1950s,shipping containers are,in many ways,the symbol of our times.They have made globalization possible. Before shipping containers,goods were loaded and unloaded by hand. Each package had to be carried onto the ship,tied down with ropes and then untied and carried out at...
The first modern computer was invented in America in 1946. It was as big as a room. It improved the speed of calculation (计算). In the 1950s, desktop computers were invented in the same country. They became smaller and could be put on the desk. Since then, they have become very imp...
In the 1930s television technology added pictures to sound; as a result, by the 1950s, TV sets were ___51___ in American homes. In the 1960s, satellites orbiting Earth made it possible to transmit radio and TV signals around the world in an instant.The next ___52___ in communicati...