题目内容

The example of El A1 Airlines shows that ______.

A. revengeful customers are a threat to the monopoly of enterprises
B. an ad campaign is a way out for enterprises in financial difficulty
C. a good slogan has great potential for improving service
D. staff retraining is essential for better service

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以RNA为模板指导合成蛋白质的过程称为( )

A. 复制
B. 逆转录
C. 转录
D. 转录后加工
E. 翻译

螺纹连接管件分镀锌和非镀锌两种,一般采用( )制造。

A. 球墨铸铁
B. 可锻铸铁
C. 蠕墨铸铁
D. 孕育铸铁

葡萄糖醛酸结合反应的药物代谢酶为

A. 细胞色素P-450
B. 磺酸化酶
C. 环氧水合酶
D. UDP-葡糖醛酸基转移酶
E. 醇醛脱氢酶

The author implies that ______.

A. participation in interesting activities relating to a subject improves one's achievement in that area
B. too many children are lazy and have poor study habits
C. school principals should do more than their share in interpreting the curriculum to the parents
D. teachers should occasionally make home visits to parents

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