1. 单项选择: 1) _____ more and more forests destroyed, some birds are _____ with the danger of dying out. a. within; facing b. by; facing c. as; faced d.with; faced 2) the winter of 1990 was extremely bad. _______ most people say it was the worst winter of their 1ives. a. as far as b. in fact c. in a word d. as a result 3) the cause of the accident may have been the engine's ________to operate. a. fault b. failure c. inconvenience d. disorder 4) he had many ____; he was obviously ________. a. fall; a drink b. falls ; drink c. feelings; drin d. falls; drunk 5) after her time in hospital, jenney’s parents are afraid she has _____ in her lessons. a.fallen behind b.fallen down c.fallen back d.fallen off 6) in some western countries, demand for graduates from mba courses has _____. a. turned down b. turned over c. fallen down d. fallen over