【B12】
A. take
B. refute
C. reject
D. endure
All artists are common in that______.
A. they use shapes and colors instead of words
B. they are trying to teach the public
C. what they want to teach is difficult to explain
D. they want to learn from the public
【B3】
A. constant
B. decreasing
C. stable
D. increasing
【B17】
A. seldom
B. frequently
C. invariably
D. hardly
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