皮皮学，免费搜题
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搜题
【单选题】
各种蛋白质的含氮量平均约为A.
8%
B.
12%
C.
16%
D.
20%
E.
24%
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】A．Changing her major. B．Spending less of her parents' money. C．Getting transferred to the English Department. D．Leaving the university.
【单选题】Money can make good health because ______.
A.
money can buy health directly
B.
couples can manage money effectively
C.
money enables couples to buy goods and services
D.
husbands and wives share everything, including money
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