Part I Structure(30%) Directions: In this section, there are 20 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C and D). Then you should mark the corresponding letter on the Answer Sheet with the size of the whole earth, the highest mountain does not seem high at all
Part I Reading(40%) Every human being, no matter what he is doing, gives off body heat. The usual problem is how to dispose of it. but the designers of the Johnstown Campus of the University o Pittsburgh set themselves the opposite problem how to collect body heat. They have designed a collection system which utilizes not only body heat, but the heat given off by such
函数极值与Fermat引理 定义5.1.1 设 f x( )在(, ) a b 上有定义, 0 x ab ∈(,),如果存在点 x0的 某一个邻域 ),(),( 0 δ ⊂ baxO ,使得 fx fx () ( ) ≤ 0 , ),( ∈ xOx 0 δ , 则称x0是 f x( )的一个极大值点, f x( ) 0 称为相应的极大值
Part L Reading comprehension (40% Directions: There are some tasks for you to fulfill. You should read the materials carefully and do the tasks as you are instructed Task 1 (10%) Directions: After reading the following passage, you will find 5 questions or unfinished statements. For each question or statement there are 4 choices marked a)