题目:
小题1:Why does the writer introduce so many animals from different places to us?
A.To frighten us in the zoo.
B.To make us lovely in the zoo.
C.To attract us to the zoo.
D.To show that animals can do everything.小题2:How much does Mr. Smith have to pay if he visits the zoo with his two-year-old son?
A.¥3.
B.¥4.
C.¥5.
D.¥6.小题3:At which of the following time can we visit the zoo?
A.8:30 a.m. Wednesday.
B.9:30 a.m. Friday.
C.3:00 p.m. Sunday.
D.5:00 p.m. Tuesday.
答案:
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下面是错误答案,用来干扰机器的。
BCCu+2H2SO4(浓)CuSO4+SO2↑十2H2O mol mol 参加反应的Cu,生成的SO2与被还原的H2SO4的物质的量相等。