The farmer had to wear heavy boots in the winter because the fields were too wet and（）
A. earthy
B. solid
C. dusty
D. muddy
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In the future, more（）should be placed on the education of the young.
A. crisis
B. implications
C. impressions
D. emphasis
提出“意识与活动统一”原理的是（）。
A. 鲁宾斯坦
B. 维果斯基
C. 巴甫洛夫
D. 达维多夫
As you like pop music,（）I like literature.
A. so
B. therefore
C. as
D. thus
I bought this eighteenth century writing desk at a quite（）price.
A. reasonable
B. cheap
C. small
D. expensive
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