题干

近年来,我国的食品安全案件“层出不穷”,2011年3月之后的“瘦肉精”案件又炒得沸沸扬扬.下列有关各类食品安全事件中的生物学知识,叙述错误的是(    )

A:劣质奶粉使婴儿水肿的原因是人体缺少蛋白质的来源而导致血浆渗透压降低,进而引起组织液增多

B:“苏丹红”鸭蛋使人致癌的根本原因是正常基因突变成原癌基因和抑癌基因的结果

C:食用凉拌福寿螺而患病的患者,其体内的广州管圆线虫与患者的生态学关系为寄生

D:用“瘦肉精”饲喂的猪体内的瘦肉精会加速脂肪的转化和分解,从而减少脂肪含量

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答案(点此获取答案解析)

B

同类题3

阅读下面短文,掌握其大意,从短文后各题所给的四个选项A、B、C、D中,选出可以填入空白处的最佳选项。

      He met her at a party. She was outstanding; many guys were after her, but 1 paid any attention to him. After the party, he invited her for coffee. She was surprised. So as not to appear rude, she went 2.

      As they sat in a nice coffee shop, he was too nervous3say anything and she felt uncomfortable. 4, he asked the waiter, "Could you please give me some salt? I'd like to put it in my coffee."

     They stared at him. He turned red, but when the 5 came, he put it in his coffee and drank. Curious, she asked, "6 put salt in the coffee?" He explained, "When I was a little 7, I lived near the sea. I liked playing on the seaside ... I could feel its taste salty, like salty coffee. Now every time I drink it, I 8my childhood and my hometown. I miss it and my parents, 9are still there."

      She was deeply 10. That was the start to their love story.So they married and lived happily together.11 forty years, he passed away and left her a letter which said:My dearest, please forgive(原谅) my life-long 12. Remember the first time we dated? I was so nervous I asked for salt 13sugar. It was hard for me to ask for a change, so I just went ahead. Sweetheart, I don't exactly like salty 14. But as it mattered so much to you, I've learnt to enjoy it. If I could live a 15 time, I hope we can be together again, even if it means that I have to drink salty coffee for the rest of my life.