What is Online Learning? In an online lesson, the computer displays material in response to a learner's request. The computer promotes the learner for more information and presents appropriate material based on the learners response. The material can be traditional lessons and tests that are transcribed into a computer program. The material can also be a complex program that tracks users'input and

I. Structure(15 minutes) Section a单词和语法选择 Directions: In this section, there are 10 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, D). Then you should mark the corresponding letter on the Answer Sheet with a single line through the center

微分中值定理包括罗尔定理、拉格朗日中值定理、柯西中值定理 一.罗尔(Rolle)定理 定理1(罗尔定理)设函数f(x)满足下列条件: (1)在闭区间[a,b]上连续; (2)在开区间(a,b)上可导; (3)f(a)=f(b);

一、1、卖淫嫖娼;2、治安承包责任制;3、了解敌社情、控制社会面;;4、精神病人和醉酒人;5、1—3年;6、不满50元的罚款; 二、C;A;A;A;

Force Force is a kind of mechanical action between different objects, it tends to change the shape, volume or movement state of the object with a force upon it. Force is a vector quantity, and thus possesses both magnitude and direction; it can be represented by an arrow whose length specifies the magnitude and whose

I. Vocabulary and Structure 1. You ought to go out without a raincoat on such a rainy day [A]make better than [B]know better than [C]get the best out of []have the best of

Part I. Vocabulary and Structure(30%): 1 who lays down his life for his country. A)There is no so greater love as that of a man B)There is no as greater love as that of a man

1. For our English homework we have to write a paper. A three-thousand-word B. three-thousands-word C. three-thousand-words d. three -thousands-word 2. Jack English in the university for 30 years by the end of next mon A. will teach B. had taught C will have taught D. has taught

Directions: In this section, you will hear ten short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once.After each question there will be a pause. During the pause you must read the four choices marked A),),C) and D),and decide which is the best answer

Complete each of the following sentences with the most likely answer. (25 points) 1. The teacher explained the point a second time, but everyone understand A. not even then does B. even then not did C. not even then did d. not even then 2. All flights because of the storm, they decided to go to Beijing by train. A. having been canceled B had been canceled C having canceled D. were canceled