1、111M5 Unit 2The Environment Language Points1.economy : n. 經(jīng)濟(jì)economic adj. 經(jīng)濟(jì)學(xué)的，經(jīng)濟(jì)上的These are the main economic plants of the region.The railway service in the country is no longer economic.economical adj. 節(jié)約的，節(jié)省的，不浪費(fèi)的 The car is economical to run.One should be economial of time and energy.2.debate n.辯論，辯論會(huì)； vt / vi 辯論，爭(zhēng)論，討論debate (about) sth. with sb. 與辯論beyond debate 無(wú)可辯論open a debate 展開(kāi)辯論hold a debate 舉行辯論會(huì)a warm debate 激烈的辯論辨析：deba。