问题
单项选择题
危险化学品登记证书有效期为（）年，登记单位应在有效期满前3个月，到所在省，自治区、直辖市登记办公室进行复核。
A、1
B、2
C、3
答案
参考答案：C
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危险化学品登记证书有效期为（）年，登记单位应在有效期满前3个月，到所在省，自治区、直辖市登记办公室进行复核。
A、1
B、2
C、3
参考答案：C
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| 1 boys and girls 2 the U.K. are wearing 3 kind (种类) of clothes and have 4 hair, so it is not 5 to know whether (是否) they are boys or girls. It's a 6 day. After supper 7 old man goes out for a walk near the river in a park in London. When he is tired, he sits down on a chair to rest and there are some persons (人) on it. Just then, he sees a child standing beside a tree far from them." 8 ,"the old man says to a person with long hair on the same chair," 9 you see the child with long hair and in a blue coat? Is it a boy or a girl?" "A girl,"says the person on the chair, "She is my daughter." "Oh! "the old man says," 10 , I don't know you are her mother." "No," says the person,"I'm her father." | ||||
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