常见墨菲征阳性的疾病是()。
A.急性胆囊炎
B.慢性胆囊炎
C.胆结石
D.胆囊癌
E.阑尾炎
参考答案:A
---She has two best friends. ----()of them is in the country.
A.All
B.Both
C.No one
D.Neither
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