如果一份肯德鸡的边际效用为3，一件金利来衬衫的边际效用为20，当二者的价格分别为15元和150元时，消费者的消……

未分类题In the sentence 'The manager interviewed Jim himself in the morning', the italicized work is used to modify______.A.the objectB.the verbC.the subjectD.the prepositional phrase

未分类题John is up to his eyes in work at the moment. The underlined word means______.A.very excitedB.very busyC.very tiredD.very efficient

未分类题'Look at those pretty girls' skirts' is ______, because it is not clear whether the girls or the skirts are 'pretty'.A.ambiguousB.hiddenC.indirectD.indistinct

单项选择题图示简支梁受到集中力作用（l = a+b），下列结论错误的是（ ）。

未分类题Why does the author say 'spring cleaning can't wait'?A.Because there will be more activities when it gets warmerB.Because the air is fresher and the breeze is lighter.C.Because the whole family is full of energy at spring timE.D.Because the snow is melting and the ground is thawing.