Cloze Test(20 points)
Directions：There are 10 blanks in the following passage．For each blank there are four choices marked A，B，C and D．You should choose the one answer that best fits into the passage．Then mark the corresponding letter on the Answer Sheet with a single line through the center．

21、根据以下内容回答21-30题：
If you asked people what the most important invention has been，manv would say the printing press．Others(1)say the wheel．But even though it's(2)whether the appear- ance of the printing press affected the course of history more than the wheel，the printing press(3)within the top two or three inventions in history．
(4)the telephone，the television，the radi0，and the computer，the written word was the only way to(5)ideas to people too far away to talk with．Until the 6th or 7th century．all books had to be written(6)．Creating a book was difficult，and very few existed．Therefore，very few people read books．
In the 6th and 7th centuries，the Chinese invented a way to print pages by(7)characters and pictures on wooden，ivory，or clay blocks．They would print a page from the block by putting(8)on the block and pressing paper onto the ink．This(9)is called letterpress printing．The invention of letterpress printing was a great advance in communication(10)each block could be inked many times and many copies of each page could be made．Many books could now be made．Therefore，many people could read the same book．
请回答(1)题
A．might
B．ought to
C．had to
D．should


22、 请回答(2)题
A．variable
B．agreeable
C．reliable
D．debatable


23、 请回答(3)题
A．lists
B．ranges
C．ranks
D．covers


24、 请回答(4)题
A．Now that
B．No longer
C．Long before
D．Since then


25、 请回答(5)题
A．invent
B．communicate
C．generalize
D．motivate


26、 请回答(6)题
A．by hand
B．at heart
C．on foot
D．in mind


27、 请回答(7)题
A．drawing
B．painting
C．writing
D．carving


28、 请回答(8)题
A．chalk
B．0il
C．ink
D．crystal


29、 请回答(9)题
A．definition
B．action
C．movement
D．process


30、 请回答(10)题
A．when
B．because
C．although
D．if