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问题 选择题

下列叙述不科学的是（　　）

A．含氟牙膏可预防龋齿

B．误食重金属盐后，可喝鲜牛奶急救

C．维生素可以调节人体的新陈代谢

D．可用聚乙烯或聚氯乙烯塑料包装食品

答案

A、氟可以防龋齿，所以A对．

B、重金属盐能破坏人体蛋白质，牛奶中含有蛋白质，喝牛奶可阻止人体蛋白质被破坏，所以B对．

C、维生素可以调节人体的新陈代谢，这是它的生理功能之一，所以C对．

D、聚氯乙烯可释放含氯物质，有毒，所以D错．

故选D．

完形填空

第三节语法填空 (共10小题，每小题1.5分，满分15分)

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为51～60的相应位置上。

Last year, I read a “ Happy Ad” in the local newspaper. There was a lady in a local nursing home, ___51__ was celebrating her 90th birthday. Her family wanted some warmed-hearted people to drop her a line. So I found a card and dropped her a short note, ______52______(wish) her a happy birthday. A week later, someone knocked at my door. I opened the door and found __53______ middle aged man standing on the doorstep. He introduced _____54______ as the son of the woman  ____55____whom I had sent the card. He explained that he just wanted to thank me _____56____  sending such a nice card to his mom. Apparently, she did not receive much mail and was excited _____57_____(receive) mine. I just didn’t know what to say. I told him it was my ______58_____(please) and that I hoped his mom had enjoyed her birthday.

The old lady ____59____ (pass) away shortly after that. I had never met this lady, but I kept her and her family in my mind. I dropped them a line of sympathy. All I hoped was ____60_____ my note was enough to brighten a couple of her days on the Earth.
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单项选择题

GB/T19000—2000族标准质量管理八项原则，首要的原则是( )。

A．以顾客为关注焦点

B．领导作用

C．全员参与

D．过程方法
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