Simulated Test [PREVIOUS] [NEXT] Part I Structure and Vocabulary Section A Directions: Beneath each of the following sentences, there are choices marked A, B, C and)Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET by blackening the corresponding letter in the brackets. (5 points)

Simulated Test [PREVIOUS] [NEXT] Part I Structure and Vocabulary Section A Directions: Beneath each of the following sentences, there are 4 choices marked A, B, C and D) Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET by blackening the corresponding letter in the brackets. (5 points)

Simulated Test [PREVIOUS] INEXT] Part I Structure and Vocabulary Section A Directions: Beneath each of the following sentences, there are 4 choices marked A, B, C and D)Choose the one that best completes the sentence. Mark your anawer on the ANSWER SHEET by blackening the corresponding letter in the brackets. (5 point)

cturea Part I Structure and Vocabulary Section A Directions: Beneath each of the following sentences, there are four choices marked A, B, C and D)Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET. (5 points) 1. Mr. Jones, I am really pleased you And I hope we will be able to see each other in not long time

Unit 1 Passage 1 The American economic system is organized around a basically private-enterprise, market-oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most. Private businessmen. striving to make profits, produce these goods and services in competition with other businessmen; and the profit motive, operating under competitive pressures, largely determines how these goods and services are produced. Thus, in the American economic system it is the demand of individual

（I）选择题： 数学一（5），数学二(7)，数学三（5），数 学四（5） 设A为n阶非零矩阵，E为n阶单位矩阵．若 3 A = 0，则（ ） (A) E − A不可逆，E + A不可逆. (B) E − A不可逆，E + A可逆. (C) E − A可逆，E + A可逆. (D) E − A可逆，E + A不可逆

Section I: Structure and Vocabulary In each question, decide which of the four choices given will most suitably complete the sentence if inserted at the place marked. Put your choice in the brackets on the left. (15 points)

Section I: Structure and Vocabulary In each question, decide which of the four choices given will most suitably complete the sentence if inserted at the place marked. Put your choice in the brackets on the left. (15 points)

美国的经济体制围绕私营为主企业和市场经济构建起来,消费者通过在市场花钱购买 他们最需要的商品和服务来决定应该生产什么。私营业主在与同行的竞争中为追求利润而 生产、提供这些产品和服务;运作于竞争压力下的利润驱动极大程度地决定着这些产品及 服务的生产方式。因此,在美国经济体制下,个人消费者的需要,加之企业家对利润最大 化的追求以及个人对使收入最大化的渴望,共同决定着该生产什么以及资源该如何使用来 进行生产

本书以教育部制订的“高等工科院校电路、电路分析课程基本要求”为依据,参阅了国内出 版的电路、电路分析最新教材,并大量收集、研究了各院校近年的电路、电路分析课程考研试题 后而编写。本书从应试出发,全面总结、归纳了电路课程的基本内容、基本概念、重点、难点、各 种分析和计算方法,以及这些概念和方法在解题中的应用。每一章均选有典型题作例题,给出 解题思路和解题方法;每章末还有阶段测试题,并给出答案。全书最后选编了四套考研电路模 拟试题和近五年西安交通大学研究生入学考试电路试题,并给出参考答案。 本书可作为报考相关专业硕士研究生的主要复习参考书,也可作为在校大学生学习电路 课程的辅导教材和参考书