11.Red wolves living in the southeast ofA merica is endangered by a(n) _______ of protection.( )
A. | regulation | B. | evolution | C. | absence | D. | guidance |
10.The pace of life in small towns is much faster than _____in big cities.( )
A. | that | B. | it | C. | one | D. | this |
9.A clean environment can contribute to the tourism of the city,which ____will promote its economic development.( )
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A. | in nature | B. | in return | C. | in turn | D. | in fact |