《大学英语一》Unit Four课后练习.docxVIP

PAGE1 / NUMPAGES1 《大学英语一》 Unit Four课后练习 一、 词汇与语法 共 9 题 1、 With prices ____?so much, it is hard for the company to plan a budget. A . fluctuating B . waving C . swinging D . vibrating 参考答案：A 2、 It is well known that teaching is a job _____ enough patience. A . calling on B . calling off C . calling for D . calling in 参考答案：C 3、 No one has ______ been able to trace the author of the poem. A . still B . yet C . already D . just 参考答案：B 4、 Vingo was released from prison _________ the successful efforts of his friends to prove hisinnocence. A . according to B . as a result of C . for reasons of D . with the help of 参考答案：B 5、 He changed his name,? ??that nobody would find out what he had done before. A . having thought B . to think C . thinks D . thinking 参考答案：D 6、 Entering the room，I found my father?????at the desk and?????something . A . seat; write B . seated; wrote C . seated; writing D . seating; writing 参考答案：C 7、 He stopped his ears with his hands to _________ the terrible noise. A . show off B . cut out C . keep from D . shut out 参考答案：D 8、 The island where these rare birds nest has been declared a _________ . A . observation B . reservation C . preservation D . conservation 参考答案：D 9、 There are?????custom tailors and dressmakers in the U.S.than in European countries. A . far fewer B . so fewer C . very fewer D . too fewer 参考答案：A 二、 完形填空 共 1 题 1、 Traveling can be fun and easy. A vacation trip to another country is especially （1） when the traveling conditions are good. Good traveling conditions include a comfortable mode (方式) of transportation, knowledge of the （2） 1anguage，familiarity?with the customs and habits 0f the people in the country，and pleasant traveling?（3）.?All of US have had nice trips as this. Most of us have also had trips that we would，（4）to forget. Many conditions can produce a bad（5）experience.For example，if the four conditions listed?above do not exist，we will probably have a bad experience?（6） at best a difficult?one Students who travel to?fore