分析 这篇短文主要讲述了造成口臭问题的原因,及其解决办法.细菌,某些食物和吸烟引起口臭,如果你不想有口臭,一定要照顾好你的牙齿和嘴巴,刷牙你应该刷至少2分钟,至少一天两次.
解答 46.A细节理解题,根据bad breath is caused by some germs(细菌) that grow in the month.Certain foods,especially ones like garlic and onions can cause bad breath.Smoking can also make bad breath.可知细菌,某些食物和吸烟引起口臭,故答案为:A.
47.B单词理解题,根据上文Bad breath is caused by some germs(细菌) that grow in the month口臭是由一些细菌引起的,可知此处是说的特殊食物也引起口臭,结合常识可知,大蒜就是引起口臭的特殊食物,故答案为:B.
48.D细节理解题,根据But the truth is that most people only brush their teeth for 30to 45seconds可知但事实是大多数人只刷牙30到45秒.,故答案为:D.
49.B细节理解题,根据To clean all your teeth,you should brush for at least 2minutes and at least twice a day可知刷牙你应该刷至少2分钟,至少一天两次,故答案为:B.
50.B细节理解题,根据If you do brush properly,but your bad breath still exists,visit your dentist for cleanings.You may have a medical problem like germ disease可知口臭可能是一个医学问题,故答案为:B.
点评 做题时要在理解好文意的基础上,与题目有机的结合,从文章中找到相关细节性的句子与选项细细比对,进行选择或推理判断,找出符合文章内容的正确答案.做题注意灵活,有时可采用排除法或直选法确定出最终答案.
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