1. They had to stop the production line for nearly two hours after a problem was discovered and the workers had .to wait until they ( ) instructions from their superiors.

　　A.raised

　　B.received

　　C.persuaded

　　D.contended

　　【答案】B。词义辨析题。工人要接受上级下达的指示，所以选择received。在发现问题后，工人们不得不停止生产线将近两个小时。等待直到他们收到上级的指示。Contend竞争奋斗。故本题正确答案按选择B项。

　　2. Our staff prefers to fly than to use other modes of transportation since it is much more ( ).

　　A.optional

　　B.protective

　　C.excessive

　　D.convenient

　　【答案】D。词义辨析题。坐飞机更加的方便，选择convenient。Optional可选择的，随意的;protective，防护的;excessive，过多的;convenient，方便的。故本题正确答案按选择D项。

　　3. Following a widespread dispute over wages, both parties involved ( ) came to an agreement to and the three-month walkout, as the company offered higher wages and job guarantees.

　　A.equally

　　B.finally

　　C.annually

　　D.increasingly

　　【答案】B。词义辨析题。双方最终达成了一致，选择副词finally。在围绕工资的广泛争论之后，双方最终达成了协议，并在3个月的罢工期间，公司提供了更高的工资和工作保障。故本题正确答案按选择B项。

　　4. A new booklet explaining the process of course selection along with counseling services is ( ) to any student interested in receiving help.

　　A.potential

　　B.available

　　C.expressed

　　D.approaching

　　【答案】B。词义辨析题。任何需要帮助的学生都可以得到一本解释选课过程和辅导服务的小册子。Available，可获得的可利用的。Potential潜在的可能的;expressed表达的;approaching接近。故本题正确答案按选择B项。

　　5. It is clear that in modern society high ( ) and demands are placed on teachers.

　　A.motivations

　　B.expectations

　　C.standards

　　D.opportunities

　　【答案】B。考查名词词义辨析。句意：显然，在现代社会人们对教师有很高的期望和要求。motivation 动机;expectation 期望、要求;standard标准;opportunity 机会。结合句意，此处选用expectations。故本题正确答案按选择B项。