A、preserve the diversity of species in them；B、accelerate the growth of young trees；C、strike a balance among different plants；D、lower their present car……｜09-10

  A、global climate change may get out of control；B、people may misunderstand global warming；C、extreme weather conditions may arise；D、forests may become a……｜09-10

  A、teachings；B、discussions；C、restrictions；D、wrongdoings…｜09-10

  A、may help correct emotional deficiencies；B、can result from either sympathy or guilt；C、can bring about emotional satisfaction；D、may be the outcome of ……｜09-10

  A、emotions are context-independent；B、emotions are socially constructive；C、emotional stability can benefit health；D、an emotion can play opposing roles…｜09-10

  A、deceptive；B、burdensome；C、addictive；D、inexcusable…｜09-08

  A、regulate a child’s basic emotions；B、improve a child’s intellectual ability；C、foster a child’s moral development；D、intensify a child’s positive feeli……｜09-08

  A、obsessing；B、dominating；C、puzzling；D、triumphing…｜08-06

  A、if；B、unless；C、until；D、because…｜08-06

  A、disappointing；B、surprising；C、restricting；D、consuming…｜08-06

  A、request；B、necessity；C、decision；D、wish…｜08-06

  A、principle；B、secret；C、belief；D、sign…｜08-06