托福词汇复习范围

　　小福利：下午场的两道句子简化题原句以及答案:

　　[原句]：Used to manufacture soap,glass,and gunpowder and to bleach linens and print calicoes,potash served a range of industrial uses but at the expense of farms,which lost the nutrients that the wood ashes would otherwise have released back into the soil had they not been exported to market.（注意语法主干的判断,以及从句中的虚拟语气哦）

　　[答案]：Potash had many industrial uses,but when wood ashes were sold for potash,farms suffered from the loss of the nutrients that the ashes would have restored to the soil.

　　[原句]：In many parts of the ocean where bacteria and krill congregate in high densities to feed on suspended particulate material,their metabolic activities deplete the water of available oxygen,thereby creating the oxygen-minimum layer.(注意语法主干，以及thereby所体现的因果关系)

　　[答案]：The oxygen-minimum layer occurs where high concentrations of bacteria and krill have depleted the water of oxygen.

　　【针对7.15日上午场】