古人评价商鞅变法说，变法具有“禁游宦之民（指不守本业、游散求官的人）而显耕战之士”的作用。具有相应作用的措施是

①“为田开阡陌封疆而赋税平”       ②“有军功者，各以率受上爵”

③“耕织致粟帛多者，复其身”       ④“令民为什伍而相牧司连坐”

A．①②

B．③④

C．②③

D．①④

China stands ready to join hands with all other countries to _________ the serious problems resulting from the energy crisis and build an even better future for the generations to come.

A．tend to

B．cut off

C．hold back

D．deal with