单选题：My doctor said I should vary my diet more．

题目分类：卫生类
题目类型：单选题
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题目内容：

My doctor said I should vary my diet more． A．prepare
B．cook
C．choose
D．change

参考答案：

答案解析：

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A number of theories have been proposed to explain the situation． A．suggested B．

分类：卫生类题型：单选题

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分类：卫生类题型：单选题

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分类：卫生类题型：单选题

（9）__________

（9）__________

分类：卫生类题型：单选题

What is the author's attitude to the computer? __________

What is the author's attitude to the computer? __________A．She dislikes it becau

分类：卫生类题型：单选题