He failed to cany out some of the provisions of the contract, and now he has to________the
A. answer for
B. run into
C. abide by
D. step into
A．put onB．put offC．put outD．put up
A. put on
B. put off
C. put out
D. put up
Biofuels are appreciated by governments because
A. burning biofuels does not add CO2 to the atmosphere.
B. biofuels can slow down the pace of global warming.
C. biofuels are a promising and profitable form. of green energy.
D. burning biofuels discharges less N20 than burning oils.
公文中的知照性尾语包括“特此通告”“现予公告”“请认真贯彻执行”等。 ()
A. 正确
B. 错误
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