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2019年20元主要采用的印刷技术有

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动物缺乏（）时，甲状腺肿大，生长发育不良。

A. 铜
B. 碘
C. 锌
D. 钴

Task 2 Choose the best answer according to the passage.1. Which of the statements is NOT true?

A. Bungee is gaining criticism as well as popularity.
B. Many states in America are passing laws making strict safety requirements on bungee jumping business.
C. Bungee jumping is an expensive sport.
D. Bungee jumping doesn’t have any risk to people.

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2. Why do people still pay a lot of money to try bungee jumping despite dangers?

A. Because they want to show their courage.
Because they want to experience the great excitement.
C. Because they have no fear of death.
D. Because they want to find true love.

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中毒或被强酸灼伤后皮肤黏膜颜色改变不正确的是:

A. 一氧化碳氧化物中毒口屏可呈樱桃红色
B. 硝酸灼伤皮肤后呈黄色
C. 硫酸灼伤皮肤后呈白色
D. 过氧乙酸灼伤皮肤后呈无色
E. 盐酸灼伤皮肤后呈棕色

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2019年20元主要采用的印刷技术有

动物缺乏（ ）时，甲状腺肿大，生长发育不良。

Task 2 Choose the best answer according to the passage.1. Which of the statements is NOT true?

2. Why do people still pay a lot of money to try bungee jumping despite dangers?

中毒或被强酸灼伤后皮肤黏膜颜色改变不正确的是:

动物缺乏（）时，甲状腺肿大，生长发育不良。