▲

19. What is the explanation method and function of the underlined sentence in the third paragraph of the article? (3 points)

▲

20. "Lemon yellow is a synthetic azo dye, which is generally used as a yellow colorant and widely used in beverages, foods, medicines, cosmetics and daily necessities." Can you delete the word "general" from this sentence? Why? (3 points)

▲

2 1.③ to ⑤ Can the description order of the three additives be changed? Why? (3 points)

▲

22. Which of the following statements about the content of the article do you think is wrong: (▲ )(3 points)

A There are three main additives for dyed steamed bread in Shanghai: preservative potassium sorbate, sweetener sodium cyclamate and pigment lemon yellow.

B after reviewing the existing evidence, FDA thinks that there is no evidence that sodium cyclamate is a carcinogen, but it does not agree to add sodium cyclamate to food.

In paragraph C.6, the author mainly illustrates the harm of lemon yellow to human body with examples and calls for banning lemon yellow in food.

D Through the author's introduction, we know that the problem of food additives has aroused widespread concern, but people still have different views on it.

Reference answer:

18.(2 points) Use interrogative sentences to stimulate readers' reading interest and arouse readers' thinking; At the same time, it also points out the explanation content of the article. (65438+ 0 point per point)

19.(3 points) Use the explanation methods of column number (1 minute) and comparison (1 minute) to specifically and accurately explain and emphasize that potassium sorbate has low toxicity and no adverse effects on human body (1 minute).

20.(3 points) cannot be deleted (1 point). The word "general" means that lemon yellow is usually used as a yellow colorant, but special circumstances are not excluded (1 min), which reflects the accuracy of the explanation language (1 min).

2 1.(3 points) cannot be exchanged (1 minute). The article explains their harm to human body (1 min) in the logical order from small to large (1 min).

22.(3 points) c