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【单选题】
关于分节运动的叙述，错误的是A.
是一种以环行肌为主的节律性舒缩活动
B.
是小肠所特有的运动形式
C.
空腹时即有明显分节运动
D.
存在频率梯度，上段频率高于下段
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【单选题】We all considered Mr Zhao ____ teacher.
A.
be the best
B.
to be the best
C.
being best
D.
being the best
【简答题】You can stay at my cottage in the country ______ you like. Awhatever Bwhenever Cwherever Dwhoever
【简答题】______, a circle with no beginning or end, was considered a symbol of being eternal.
【简答题】可燃性油气与空气混合，在爆炸极限的下限以下，遇明火不会爆炸和燃烧。()
【单选题】The application of the unemployed workers ________ the post is being carefully considered.
A.
to
B.
for
C.
for
D.
in
【简答题】You can stay at home . You can also go to my hometown with me. 合并为一句 You can -------- stay at home --------- go to my hometown with me .
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