题目内容

you eat the correct foods be able to keep fit and stay healthy.

A. Only if; will you
B. Only if; you will
C. Unless; will you
D. Unless; you will

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Though having lived abroad for years, many Chinese still ______ the traditional custom.

A. perform
B. possess
C. observe
D. support

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A. 梭状芽孢杆菌
B. 链球菌
C. 拟杆菌
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B. 转氨酶增高
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动─静脉氧差缩小常见于

A. 心源性休克
B. 低血容量休克
C. 感染性休克
D. 过敏性休克