Teachers have to constantly update their knowledge in order to maintain their professional ________.(2011·江苏，27)
#11482
A
consequence
B
independence
C
competence
D
intelligence
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The new law of consumer rights also __________ rules about returning faulty goods and sets out protections for those who receive poor services.
#12551
A
announces
B
clarifies
C
consists
D
possesses
It turned out that she won the first prize in the competition, which was beyond her .
#10882
A
expectations
B
reputations
C
contributions
D
celebrations
______ the students in our class is 50 and _______ them study very hard.
#14367
A
The number of; the number of
B
A number of ; the number of
C
The number of; a number of
D
A number of; a umber of
There has been ____ accidents on this part of road.
#14351
A
a number of
B
a great deal of
C
a series of
D
plenty of
American English has so many _________ because the American people have come from all over the world.
#13391
A
grammar
B
vocabulary
C
pronunciations
D
dialects