题目内容
14．Body language is useful in our life．You _______know the language of someone who's talking to you in a foreign country，but body language can help you to understand．（ ）| A． | mustn't | B． | may not | C． | shouldn't |
分析 肢体语言在我们的生活中是很有用的，你可能不理解有人用外语跟你说的话，但是肢体语言可以帮助你理解．
解答 答案：B．
结合选项可知本题考查情态动词，首先明确选项中每个单词的意思：A：不可以（表禁止）；B：可能不；C：不应该； 结合题干推测句意是"肢体语言在我们的生活中是很有用的，你可能不理解有人用外语跟你说的话，但是肢体语言可以帮助你理解．"，所以may not 符合句意，表推测．故选B．
点评 本题考查了情态动词的用法．解答时首先根据题干明确句意，理解所给选项中每个情态动词的意思并熟练掌握它们的用法，便可作出正确选择．
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4．Twentieth Century Inventions
●●●1903-The first flight succeeded．
In 1900，Wilbur Wright said flight was possible for man．After much work he and his brother Orville Wright made this dream come true．
On December 17，1903，the brothers made the first successful airplane flight on a windy beach at Kitty Hawk，North Carolina．The brothers'plane flew 120feet．Although the flight lasted only 12seconds，it moved the course of history in a new direction．
●●●1935-Nylon was invented．
In 1928，a new chemical lab was opened to make a kind of man-made materials．Wallace Carothers took part in the team when he was 32years old．
In 1934，he made fibers （纤维），but the fibers were quite weak．He didn't give up．After many experiments，he produced the long and strong fibers in 1935．They named the fibers"nylon"．Carothers was very satisfied with his work．
Nylon hit the markets in 1939，and quickly became a replacement of silk．But it was a pity that he didn't see the wide use of his invention．He died in April，1937．
●●●1968-The computer mouse was first shown in public．
As a graduate student，Douglas Engelbart began to imagine ways in which all sorts of information could be on screens．
In 1964，Douglas Engelbart made the first computer mouse．The computer mouse had a wooden shell with two metal wheels．
In 1968，the first computer mouse appeared in public．It was named"mouse"because a tail came out at the end．In later years，the computer mouse became more and more important．
Douglas Engelbart changed the way that computers worked．
Now computer mice are becoming increasingly useful．And there are many different shapes of computer mice in the world．
根据文章内容，完成下列表格．
●●●1903-The first flight succeeded．
In 1900，Wilbur Wright said flight was possible for man．After much work he and his brother Orville Wright made this dream come true．
On December 17，1903，the brothers made the first successful airplane flight on a windy beach at Kitty Hawk，North Carolina．The brothers'plane flew 120feet．Although the flight lasted only 12seconds，it moved the course of history in a new direction．
●●●1935-Nylon was invented．
In 1928，a new chemical lab was opened to make a kind of man-made materials．Wallace Carothers took part in the team when he was 32years old．
In 1934，he made fibers （纤维），but the fibers were quite weak．He didn't give up．After many experiments，he produced the long and strong fibers in 1935．They named the fibers"nylon"．Carothers was very satisfied with his work．
Nylon hit the markets in 1939，and quickly became a replacement of silk．But it was a pity that he didn't see the wide use of his invention．He died in April，1937．
●●●1968-The computer mouse was first shown in public．
As a graduate student，Douglas Engelbart began to imagine ways in which all sorts of information could be on screens．
In 1964，Douglas Engelbart made the first computer mouse．The computer mouse had a wooden shell with two metal wheels．
In 1968，the first computer mouse appeared in public．It was named"mouse"because a tail came out at the end．In later years，the computer mouse became more and more important．
Douglas Engelbart changed the way that computers worked．
Now computer mice are becoming increasingly useful．And there are many different shapes of computer mice in the world．
根据文章内容，完成下列表格．
| 56．Inventor | Invention | Time | Influence |
| Wilbur Wright and his brother | airplane | 1903 | 57．The airplane moved the course of history in a new direction |
| Wallace Carothers | nylon | 1935 | 58．Nylon became a replacement of silk |
| Douglas Engelbart | 59．the computer mouse | 1964 | 60．The computer mouse changed the way that computer worked |