问题
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According to the passage , distance learning is ba
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According to the passage,A.the distance between people can be fixed.B.the distance kept be
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According to the context, "this" in the third paragraph refers to ____ .A.the difficulties
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According to the passage, the writer _______.A.belongs to a high social classB.comes from
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______refers to a branch of linguistics concerned with the use of language in social conte
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According to the passage, some social workers think that______.A.health and safety are mor
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