首页
普通专升本
成人高考
学位英语
在线刷题
最近学习
最近学习课程
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
您现在位置：
模拟考场
>
学士学位英语
>
浏览试题
[单选题]
Jack was frustrated when he realized _______ to achieve the goal.(1分)
A
(A) how hard it would be
B
(B) how would it be hard
C
(C) very difficult it will be
D
(D) it is difficult
收藏
查看答案
参考答案
试题答案：
A
答案解释：
相关题目
______ seeing her long-lost son again, the mother burst into tears.(1分)
Joining the firm as a clerk, he got rapid promotion through his diligence and _____ as a manager last year.(1分)
Professor Tracey is the____ member of our literary society and in fact he is one of the five organizers of the society.
9．1+1=_____
7. (A)Color (B)Light (C)Ribbon (D)rainbow
She _______ for years by the time she takes TOEFL examination.(1分)
The world has been changed in the past several decades into one knowledge is now the engine for socio-economic development.(1分)
请以“Drunken Driving”为题，根据以下提示，在答题卡上相应区域用英语写一篇不少于100个词的短文。(1) 醉酒驾车的危害；(2) 如何减少醉酒驾车。(30分)
1.Friction is a force which opposes motion. Much of the energy supplied to a complicated machine with many moving parts is wasted in overcoming this opposition. The energy is converted into useless heat. The amount thus lost can be considerably reduced and the life of the machine prolonged by careful lubrication. This reduction improves the efficiency of the machine. Another way in which friction is reduced is to substitute roller or ball bearings for the earlier type of bearing, in which the surfaces in contact move by sliding. Bearings of these later types are used very extensively in many kinds of modern machinery.It must not be assumed, however, that friction is always a disadvantage. In many instances it is highly important. Belts are often used in conveying power from one machine to another. In the absence of friction, this could not be done. The driving wheel would not run the belt, neither would the belt run the wheel to driver. Without friction, then, belted machinery could not be used. Again in the case of all motor vehicles, friction is essential in the operation of the brake. Were there no friction, there could be no brake. But even this illustration does not give an adequate picture of the importance of friction. The vehicle could not even be started if it were not for the friction exerted between the tires and the road. Nails hold in wood, and screws hold in either wood or metal by reason of friction, without which they would be useless. Walking is difficult enough on an icy pavement, but it would be wholly impossible if there were no friction at all between the shoe and the pavement.(5分)1.1 Friction arises when____.(1分)A. an opposing force of motion exists B. the energy is wastedC. everything is motionlessD. a complicated machine is supplied with energy
23.4The author states that technology itself .(2分)
热门试题
1.
29．在皮亚杰看来，“个体将外界现实纳入已有的认知结构中去的过程”是
2.
下列城市中，符合该国的首都、全国最大城市、全国最大港口三个条件的是 ( )
3.
1689年，英国议会通过《权利法案》确立的政体是（ ）
4.
全国第一块农村根据地是( )
5.
16.采用生命周期法进行管理信息系统开发时所包含的4个阶段依次为
热门试卷
成人高考专升本《政治》模拟试卷
去做题
已有3133做题
2020年湖北成人高考专升本政治模拟试题三
去做题
已有1937做题
成人高考专升本政治考试模拟试题及答案(1)
去做题
已有1721做题
成人高考高起点语文考试高分突破试题及答案四
去做题
已有1149做题
成人高考专升本政治考试模拟试题及答案(2)
去做题
已有1055做题
