食品安全问题正日益成为社会关注的焦点。下列措施正确的是
A．用瘦肉精养猪以降低猪肉中的脂肪含量
B．用小苏打做糕点的疏松剂
C．用聚氯乙烯塑料作食品包装袋装食物
D．用甲醛溶液浸泡海鲜以防腐烂
答案：B
题目分析：A．瘦肉精是一类动物用药，但对人体会产生副作用。此项错误。B．小苏打受热分解生成二氧化碳气体，使糕点的疏松。对人体无害。此项正确。C．聚氯乙烯塑料中含有有毒物质，可影响人体健康。此项错误。D．甲醛有毒，不能用于浸泡海鲜。此项错误。所以应选B项。
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Life used to be fun for "teenagers". They used to have money to spend, and free time to while away (消磨). They used to wear teenage clothes, and meet in teenage coffee bars and discos. Some of them still do. But for many young people, life is harder now. 1. are difficult to find. There's not so much money around. Things are 2. , and it's hard to find a place to live in. Teachers say that students work harder than they used to. They are less 3. in politics, and more interested in 4. exams. They know that good exam results may bring them better jobs. Most young people worry more about money than their parents did twenty years ago. They try 5. less and save more. They want to be able to get homes of their own one day. For some, the answer to unemployment (失业) is to leave home and look for jobs in one of Britain's big 6. . Every day hundreds of young people arrive in London from other parts of Britain, looking for jobs. Some find jobs and stay. 7. don't, and go home again, or join the unemployed (失业者) in London. When you read the newspapers and watch the news on television, it's 8. to get the idea that British young people are all unemployed, angry and in trouble. But that's not true. Three quarters of them do more or less what their parents did. They do their best at school, find some kinds of jobs in the end, and get 9. in their early twenties. They get on well with their parents, and enjoy their family life. After all, if they don't, they 10. be British, will they? |