复旦大学考博英语词汇练习题及参考资料( 6 )一、根据复旦大学考博英语考试大纲规定,每年词汇题共30小题，每小题0.5分，共15分。 预计测试时间（25分钟）121. The river is already _ its banks because of excessive rainfall, and the city is threatened with a likely flood. A parallel to B level in C flat on D flush with122. The ratio of the work done by the machine _ the work done on it is called the efficiency of the machine. A against B with C to
