51、Not having a good command of English can be a serious ________ preventing you from achieving your goals.
A．obstacle
B．fault
C．offense
D．distress
52、It’s very ________ of you not to talk aloud while the baby is asleep.
A．concerned
B．careful
C．considerable
D．considerate
53、Many a player who had been highly thought of has ________ from the tennis scene.
A．disposed
B．disappeared
C．discouraged
D．discarded
54、She’s fainted. Throw some water on her face and she’ll ________.
A．come round
B．come along
C．come on
D．come out
55、All their attempts to ________ the child from the burning building were in vain.
A．regain
B．recover
C．rescue
D．reserve
56、Computer technology will ________ a revolution in business administration.
A．bring around
B．bring about
C．bring out
D．bring up
57、The university has launched a research center to develop new ways of ________ bacteria which have become resistant to drug treatments.
A．regulating
B．halting
C．interrupting
D．combating
58、The ________ goal of the book is to help bridge the gap between research and teaching, particularly the gap between researchers and teachers.
A．joint
B．intensive
C．overall
D．decisive
59、The rapid development of communications technology is transforming the ________ in which people communicate across time and space.
A．route
B．transmission
C．vision
D．manner
60、When I go out in the evening I use the bike ________ the car if I can.
A．rather than
B．regardless of
C．in spite of
D．other than