题目内容

那位流行歌手在媒体上说的话对歌迷们影响很大。

A. The pop singer’s words in the media have almost no influence on the fans.
B. The pop singer’s words in the media have little influence on the fans.
C. The pop singer’s performance in the show has a huge impact on the fans.
D. The pop singer’s words in the media have a strong impact on the fans.

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我明白了锻炼身体是在保护自己的幸福生活。

A. I understand that doing exercise is good for maintaining a healthy life.
B. I come to realize that my happy life has something to do with my healthy lifestyle.
C. I come to realize that my happy life relies on my healthy lifestyle.
D. I understand that it is for protecting my happy life to do exercise.

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下列关于热原的描述错误的是（）。

A. 热原也可称为内毒素
B. 热原也可称为细菌内毒素
C. 热原主要成分是脂多糖
D. 热原能引起体温轻微升高
E. 能引起恒温动物体温异常升高

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下列能彻底破坏热原的条件是（）。

A. 60℃加热120min
B. 100℃加热60min
C. 150℃加热30min
D. 180℃加热30min
E. 250℃加热30min

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热原（细菌内毒素）致热的主要成分是（）。

A. 蛋白质
B. 磷脂
C. 脂多糖
D. 胆固醇
E. 甾体皂苷

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