Part I Vocabulary and structure 30% A: Make the best choice: 1. She was able to cope ---- the difficulties she met with a. in b with d

一、选择题 （1）C） （2）A） （3）C） （4）D） （5）C） （6）D） （7）A） （8）A） （9）B） （10）B） （11）B） （12）C） （13）C） （14）D）（15）C） （16）C）

Part I Vocabulary Structure (25%) Section a Directions: Complete each sentence by choosing the appropriate answer from the 4 choices 1. He said.\I a lot of new words by the end of last year A) had already learnt C)have already learnt B)would have already learnt D)already learnt

5-1 MCS-51单片机最小系统 5-2 存储器的扩展 5-4 可编程并行接口芯片8255A 5-6 常用通道配置与接口技术 5-7 D / A转换 5-3 并行I / O端口的扩展方法 5-5 可编程并行接口芯片8155 5-8 A / D转换

Why one needs statistics for describing physical phenomena? Any measurable macroscopic property is an average over a very huge number of microscopic configurations. Time scale of thermal fluctuations and basic relaxations~fs(femto second, 10-15 second). During the time interval necessary for realizing a measurement, a macroscopic system undergoes the change of its microscopic configuration for many many times!

应注意矩阵与行列式的本质区别.行列式是一 个算式,一个数字行列式经过计算可求得其值 ,而矩阵是一个数表,它的行数和列数也可以 不同.对于n阶方阵,虽然有时也要算它的行列 式,记作A或detA,但是方阵A和方阵A的行列 式是不同的概念

Rn中的n个单位向量 1=[1,0,0,0] E2=[0,1,0,,0] n=[0,0,1 是线性无关的 一个n阶实矩阵A[anxn如果≠0,则A的n个 行向量和n个列向量也都是线性无关的.此外, Rn中任何n+1个向量都是线性相关的,因此Rn 中任一向量a都可用Rn中n个线性无关的向量 来表示,且表示法唯一.由此给出基和坐标的

(Harvard University and NBER) October 1, 2002 Abstract There are two dierent types of media bias. One bias, which we refer to as ideology, re ects a news outlet's desire to aect reader opinions in a particular direction. The second bias, which we refer to as spin

Forces on a Wire Carrying a Current in a Magnetic Field Magnetic Pressure Magnetic Energy Denisity Magnetic Forces btwn Two Electric Currents Magnetic Forces Within an Isolated Circuit

I. Explain the italicized words or phrases in the following sentences. (20%) 1. Ancient girders creak and groan, ropes tighten and then a trickle of oil oozes down a stone runnel into a used petrol can