英语四级
A．They accurately calculated the speed of the orbiting shuttles.
B．They developed objects for astronauts to use in outer space.
C．They tried to meet astronauts' specific requirements.
D．They tried to make best use of the latest technology.
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A．They are extremely accurate.
B．They are expensive to make.
C．They were first made in space.
D．They were invented in the 1970s.
第19题答案________
A．It was when her ancestors came to America.
B．People had plenty of land to cultivate then.
C．It marked the beginning of something new.
D．Everything was natural and genuine then.
A．They believed in working for goals.
B．They enjoyed living a living a life of ease.
C．They had all kinds of entertainment.
D．They were known to be creative.
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至 第 56 题 Section A Directions: In this sec
泰山位于山东省西部。海拔1500余米,方圆约400平方公里。泰山不仅雄伟壮观,而且是一座历史文化
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