问题
单项选择题
下列药品中毒洗胃时禁用碳酸氢钠溶液的是
A．二氯磷
B．甜菜宁
C．香豆素类
D．乐果
E．磷胺
答案
参考答案：C
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下列药品中毒洗胃时禁用碳酸氢钠溶液的是
A．二氯磷
B．甜菜宁
C．香豆素类
D．乐果
E．磷胺
参考答案：C
Billy，a hard-working student，is fourteen years old and in the ninth grade．He has a part-time job that 16 him up every morning at five o’clock，when most people are still 17 asleep．He is a newspaper boy. Each morning，Billy leaves the house at 5：15 to go to the 18 where the newspapers always are．The newspapers were 19 to the corner by truck at midnight．He always takes a wagon to 20 them． In the winter it is still dark 21 he gets up every day，but during the rest of the year it is 22 ．Billy must send the newspapers to the houses of people on his 23 in all kinds of weather．He tries to put each paper on the porch(门廊)where it will be 24 from wind and rain or snow．Sometimes his customers give him tips， 25 him very excited． Billy earns about$70 per month through hard 2 6 ，and he is saving some of the money to go to 27 ，where he has always been longing to go．Besides that，he 28 the rest of the earnings on records and clothes．Once a month，he has to collect the 29 at night since many of them work during the day．That is when he is 30 so that he is full of excitement．Luckily，he gets 31 supported by his family．Sometimes，when Billy is sick，his brother offers to deliver the newspapers for him．Once，his father was too 32 to help him, Billy has seventy customers now，but he doesn’t feel 33 about the number． He dreams that he will get 34 customers as possible some day． 35 ，he might win a prize for being an outstanding newspaper boy．He wants to win a trip to Europe，but he will be happy if he wins a new bicycle.
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