题目内容

按化学性质的不同，可将食品增味剂分为（）

A. 氨基酸类
B. 核苷酸类
C. 正羧酸类
D. 维生素类

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食品增味剂谷氨酸钠是鲜度的标准，下列对于谷氨酸钠的描述正确的是（）

A. 属于氨基酸类增味剂
B. 属于核苷酸类增味剂
C. 呈味能力与电离度有关。pH值为6～7时，谷氨酸钠全部电离，鲜味最高
D. 与食盐共用会降低其呈味能力
E. 与核苷酸类增味剂混合使用，其呈味能力增强

5-呈味核苷酸二钠是指（）和（）化合物，两者混合的比例为（），能呈现出动植物鲜味融合一体的所形成的一种较为完全的增味剂。

A. 5-鸟苷酸二钠（GMP）
B. 1:1
C. 5-肌苷酸二钠（IMP）
D. 1:2

Upload the following shopping phrases or sentences orally.3.限量版4.促销5. 3折起6.奥特莱斯7.过季了8. 打折吗？9. 网购10.百货商店11.把瓶子装满水12.大型购物街13.大的折扣14.收据

Proofreading & Error CorrectionEach indicated line contains a maximum of one error. In each case, only one word is involved. You should proofread the passage and correct it in the following way:For a wrong word, underline the wrong word and write the correct one in the blank provided at the end of the line.For the missing word, mark the position of the missing word a “^” sign and write the word you believe to be missing in the blank provided at the end of the line.For an unnecessary word, cross the unnecessary word with a slash “/” and put the word in the blank provided at the end of the line.Now, it is clear that the decline of a language must ultimately havepolitical and economical causes: it is not due simply to the bad1influence of this or that individual writers. But an effect can become 2a cause, reinforce the original cause and producing the same effect3in an intensified form, and so on indefinitely. A man may take drink4because he feels himself to be a failure, and then fail all the most5completely because he drinks. It is rather the same thing that is happening tothe English language. It becomes ugly and inaccuratebecauseour thoughts are foolish, but the sloven of our language6makes it easier for us to have foolish thoughts. The point is that theprocess is irreversible. Modern English, especially written English,7is full of bad habits which spread by imitation and which can beavoided if one is willing to take the necessary trouble. If one getsrid of these habits one can think more clearly, and think clearly is a8necessary first step towards political regeneration: so that the fightagainst bad English is not frivolous and is not the exclusive concerning9of professional writers. I will come back to this present, and I hope10that by that time the meaning of what I have said here will havebecome clearer.