简述家用杀（驱）虫剂种类及其危害。
参考答案：
家庭常用的防蚊驱蚊剂有驱蚊灵、酞酸酊酯、甲苯二乙胺等。灭蚊灭蝇药如拟除虫菊酯、氨基甲酸酯类杀虫药，主要有残杀威、敌敌畏、敌百虫等；消灭蟑螂用的硼砂、倍硫磷等。灭鼠用的安妥、磷化锌、氟乙酰胺等。还有防虫蛀用的卫生球等。人体接触暴露后，可引起神经行为功能改变和皮肤黏膜刺激征如流泪、打喷嚏、面部发痒或烧灼感、面部蚁走感或刺痛感等；可以引起头痛、乏力、食欲减退、恶心、皮肤过敏等反应；如果长期过量吸入杀虫剂的气雾，那就会损伤人的肝脏、肾脏、神经系统、造血系统。尤其是儿童，会引起更严重的后果。
Work and study today are very different from what they were like 20 years ago. In the past, people often worked in the same job from graduation till retirement. Today, however, everyone needs to learn new things constantly on the job and it is common practice for people to go back to school from time to time in order to keep up with the fast changing world. Changing jobs has also become common practice for many people as they aim to enrich their work experience, develop new skills and meet new challenges. In today’s world of constant innovation (创新，革新), you can’t afford to think that you have finished with your studies. If you don’t want to be all behind in today’s competitive job market, you have to commit yourself to lifelong learning. Effective lifelong learning is not only a matter of collecting formal qualifications. It’s also about forming habits that help you study, and developing attitudes that make you receptive (善于接受的，能容纳的) to learning. Habits that help you study include time management, note taking, analysis and writing. These habits are useful but you won’t learn effectively unless you have the right attitude. Being open-minded is important because learning something new often means challenging the ideas you have already hold. Expecting to learn something that is both new and valuable will in fact help you to do so. For successful lifelong learning, you must take these study habits and attitudes with you when you leave school to start on your adult lives. School is the ideal place to gain lifelong learning skills because you have support and resources, and you are young and naturally more open to learning. If you invest time in developing your study skills now, you’ll be enjoying the rewards for the rest of your life. In school you also have the time to develop learning skills. Many adults are sadly too busy to develop learning skills once they start work. Today you cannot assume that completing a course will give you qualifications that will see you through your career. Change is unpredictable and you must be ready for it. In fact, there is no profession that doesn’t require continuous learning. But this is not something to be scared of. All you need to do is to develop learning skills and learn how to learn so that you are ready to keep yourself up-to-date with changes that come your way. Be open-minded, have the right attitude, and be ready for the next challenge.
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