6.下列表示溶液中發(fā)生反應(yīng)的化學(xué)方程式錯(cuò)誤的是( )
A.2Al+2NaOH+2H2O=2NaAlO2+3H2↑
B.KMnO4+HCOOK+KOH=2K2MnO4+CO2↑+H2O
C.MnO2+4HCl(濃) MnCl2+Cl2↑+2H2O
D.K2Cr2O7+6FeSO4+7H2SO4=Cr2(SO4)3+3Fe2(SO4)3+K2SO4+7H2O
20.--Do you have ______ homework?
--I don’t have ______.
A. some, some B. some, any
19.“Help _______ to some cakes!” Uncle Tom said to the twins.
A. yourself B. youself
C. yourselves D. youselves
18.--_______ of the dictionaries would you like?
--I’ll take _______ of them, so I can give one to my cousin.
A. Which, both B. Which, all
C. What, either D. What, both
17.The buildings in Dalian are similar to ______ in Tokyo.
A. ones B. those C. these D. that
16.--What are you doing here, Mary and Kate?
--We are looking at _______ pictures.
A. each’s other B. each other’s
C. each other D. each’s other’s
15.I have had enough food. Would you like _______?
A. a few more B. one more
C. another more D. some more
14.She stayed at this school longer than ______.
A. anyoneB. everyone
C. anybody else D. else anyone
13.The book on the shelf is ______. She wrote her name on ______ cover ______
A. her, it, herself
B. hers, it, herself
C. hers, her, herself
D. hers, its, herself
12.We think ______ important to protect the environment.
A. it B. this C. that D. what
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