第2题: [填空题]What were American people persuaded to do in the 1920s A. A.They were persuaded to save for a rainy day B.They were persuaded to increase their income C.They were persuaded to spend money now.
参考答案:C
第3题: [单项选择]全脂奶粉按重量调配,奶粉与水的比例是 A. 1:8 B. 1:6 C. 1:4 D. 4:1 E. 2:1 参考答案:A 答案解析:全脂奶粉与水的比例按重量1:8或体积1:4调成乳汁,其成分与鲜牛奶相似。