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皮皮学刷刷变学霸
举一反三
【单选题】糖类、脂肪和蛋白质是维持人体生命活动必需的三大营养物质。下列说法错误的是
A.
纤维素、淀粉、脂肪、蛋白质都是高分子化合物
B.
淀粉水解的最终产物能发生银镜反应
C.
误食重金属盐而引起的中毒可服用大量豆浆或牛奶进行解救
D.
油脂能发生皂化反应，生成甘油和高级脂肪酸钠
【单选题】Which of the following introduction paragraphs do you think is the best?
A.
Introduction A The bar chart illustrates the changing value in US dollars of tourism to the Egyptian economy between 1982 and 2003. Overall, it is clear that there were both increases and decreases in the amount of money generated by tourism over the period. 42 words
B.
Introduction B The graph shows the contribution of tourism in billions of dollars to the Egyptian economy from 1982 to 2003. Overall, there were higher amounts of money generated by tourism at the end of the period than at the beginning with the lowest in 1982 and the highest in 2000. 49 words
C.
Introduction C The bar chart illustrates the income generated by tourism in Egypt in certain years between 1982 and 2003. Overall, there was a higher income from tourism at the end of the period than at the beginning with an increase in income from 1982 to 2000 followed by a decline. 49 words
D.
Introduction D The bar chart illustrates the income generated by tourism in Egypt in certain years between 1982 and 2003. Overall, there was a higher income from tourism at the end of the period than at the beginning with an increase in income from 0.3 billion dollars in 1982 to a peak of 4.4 billion dollars in 2000 followed by a decline to around 1.7 billion dollars at the end of the period. 71 words
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