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【单选题】
耕作层的厚度一般为（）A.
0-5厘米
B.
0-20厘米
C.
0-30厘米
D.
0-35厘米
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皮皮学刷刷变学霸
举一反三
【单选题】Internet is ________ used by people, especially by young people.
A.
deeply
B.
widely
C.
hardly
D.
highly
【单选题】在酒店不设迎宾员和设置迎宾员、当着客人的打扫房间和背开客人来打扫房间，探求在不同情况下客人的反应和心理变化属于（）
A.
观察法
B.
案例研究法
C.
实验法
D.
调查研究法
【简答题】It is highly recommended that old people check their diet against healthy food recommendations and adj______ where necessary.
【简答题】According to Professor Deiner some people feel unhappy because they cannot appreciate_____________.
【单选题】Before the 17th century, 'the little people' or 'the hidden people' were ______.
A.
highly respected
B.
called universally as fairies
C.
believed to be active at night
D.
said to move about naked all the time
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