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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】食用牡蛎后引起荨麻疹、湿疹的可能原因是（）
A.
体内缺乏葡萄糖6-磷酸酶
B.
红细胞中缺少单加氧酶
C.
体内缺乏半乳糖激酶
D.
食物中含有酪胺
E.
食物中含有组胺释放因子
【单选题】The Rockies, the Alps, the Himalayas -something about these peaks draws us to them. Many of us are simply inspired by their beauty, and some even risk life and limb (生命) to climb them. What enormous f...
A.
People are mysteriously attracted to mountains.
B.
People can climb different mountains every year.
C.
Some mountains rise higher all the time.
D.
Old, new, and ancient mountains exist.