完形填空 Throughout history man has had to a

问题完形填空

完形填空

     Throughout history man has had to accept the fact that all living things must die. But people now live
longer than they__1__.Yet, all living things still show the__2_of aging, which will eventually__3__death.
     Aging is not a disease, but as a person passes maturity (成熟期), the cells of the body and the__4__
they form do not function as well as they__5__in childhood and teenage years. The body provides less
__6__against disease and is more__7__to have an accident.
     A number of related causes may__8__to aging. Some cells of the body have a fairly long life, but they
are not__9__when they die. As a person ages,    10   of brain cells and muscle cells decreases.  11
body cells die and are replaced by new cells. In an aging person the  12 cells may not be as workable
or as capable   13 growth as those of a young person.
    Another  14 in aging may be changes within the cells 15 . Some of the protein chemicals in cells are
known  16 with age and become less elastic (有弹性). This is why the skin of old people wrinkles and
  17 . This is also the reason why old people 18  in height. There may be other more important chemical
changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and  19 information
that the cells need. Aging may affect this  20   and change the informationcarrying molecules so that they
do not transmit the information as well.

( )1．A. would
( )2．A. function
( )3．A. lead in
( )4．A. hands
( )5．A. do
( )6．A. energy
( )7．A. likely
( )8．A. attend
( )9．A. replaced
( )10．A. a number
( )11．A. The others
( )12．A. old
( )13．A. to
( )14．A. factor
( )15．A. for themselves
( )16．A. change
( )17．A. hangs loose
( )18．A. increase
( )19．A. pass away
( )20．A. improvement

B. be used to
B. effect
B. give in
B. feet
B. has done
B. protection
B. probable
B. contribute
B. rebuilt
B. the amount
B. Others
B. left
B. for
B. effect
B. of themselves
B. to have changed
B. hangs loosely
B. shrink
B. pass by
B. procession

C. used to
C. affect
C. run into
C. heart
C. did
C. vigor
C. possible
C. add
C. recovered
C. the number
C. Another
C. new
C. of
C. reason
C. themselves
C. to change
C. is hanging loosely
C. lengthen
C. pass off
C. approach

D. used
D. sign
D. result in
D. organs
D. had done
D. power
D. alike
D. devote
D. surrendered
D. a great deal
D. Other
D. other
D. in
D. element
D. on their own
D. to be changed
D. is hanging loose
D. decrease
D. pass on
D. process

答案

1-5: CBDDC 6-10: BABAC 11-15: DCCAC 16-20: CABDD