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【多选题】
What is culture?A.
Culture indicates only what people dress, eat and talk in their daily life.
B.
Culture is communication and communication is culture.
C.
C ulture refers to the total way of living of particular groups of people. It includes everything that a group of people think, say, do, and make.
D.
K nowledge, belief, art, morals, law, custom, and any other capabilities and habits acquired by man as a member of a society are culture.
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举一反三
【单选题】The World Wide Web is sometimes jokingly called the World Wide Wait because it ________ be very slow sometimes. [ ]
A.
will
B.
can
C.
should
D.
must
【多选题】以下有关旋光性的说法中正确的是( )。
A.
旋光特性是由于物质分子中含有不对称元素（通常为不对称碳原子）所致。
B.
使偏振光向右旋转者（顺时针方向，朝光源观测）称为右旋物质，常以“＋”号表示；使偏振光向左旋转者则称为左旋物质，常以“－”号表示。
C.
使偏振光向右旋转者（顺时针方向，朝光源观测）称为左旋物质，常以“＋”号表示；使偏振光向左旋转者则称为右旋物质，常以“－”号表示。
D.
使偏振光向右旋转者（顺时针方向，朝光源观测）称为左旋物质，常以“-”号表示；使偏振光向左旋转者则称为右旋物质，常以“+”号表示。
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