第6题: [单项选择]Modern forms of transportation and communication have done much to ______ the isolation of life in Alask A. A. break downB. break intoC. break outD. break through 参考答案:D 答案解析:本题为词组辨析题。break down意为“(机械)出故障,抛锚”;break into意为“强行闯入”;break out意为“(火灾,疾病,战争等)爆发”;break through意为“突破”。
第16题: [单项选择]Mr. Scott asked for an assistant because his work load was too ______. A. preoccupied B. onerous C. trifling D. omnipresent 参考答案:B 答案解析:preoccupied被先占的,全神贯注的。onerous繁重的,费力的。trifling不重要的。 omnipresent普遍的,无所不在的。