[单项选择]_________ still young, Mr. George has had amazing achievement in cosmology.


A. When
B. As
C. Although
D. Since

[单项选择]______ still young, Mr. George has had amazing achievement in cosmology.
A. When
B. As
C. Although
D. Since

[单项选择]The young boy had no friends there. His (lonely) ______ made him unhappy.

[单项选择]The visitors, men and women, old and young, had walked for many hours, ______ of them got .very tired, but______ of them would stop to take a rest.
A. all.., neither
B. both.., none
C. all.., none
D. both.., everyone

[单项选择]With enough evidence, the young man had to ______ to stealing the jewels.
A. recognize
B. acknowledge
C. admit
D. remember

[单项选择]______he is still young, he is going very grey.
A. As long as
B. As
C. While
D. Even

[单项选择]Although Julia Roberts has had much professional success. In spite of her trouble with several failed relationships.（）
A. fragment
B. choppy
C. comma splice
D. correct

[单项选择]

Throughout history man has had to accept the fact that all living things must die, but people now live longer than they (36) . Yet, all living things still show the (37) of aging, which will eventually. (38) death.
Aging is not a disease, but as a person passes maturity, the cells of the body and the (39) they form do not function as well as they (40) in childhood and adolescence (青春期). The body provides less (41) against disease and is more prone (42) accident.
A number of related cause may (43) aging. Some cells of the body have a fairly long life, but they are not (44) when they die. As a person ages, (45) of brain cells and muscle cells decrease, (46) body cells die and are replaced by new cells. In an aging person the (47) cells may not be as viable (能生存的) or as capable (48) growth as those of a young person.
Another (49) in aging may be changes within th
A. pass to
B. pass on to
C. pass from
D. pass on