TEXT A
Do you realize that every time you take a step, the bones in your hip are subjected to forces between four and five times your body weight? [81]When you are running, this force is incread further still. What happens if through dia a hip-joint ceas to be able to resist such forces? For many years hip-joints and other body joints have been replaceable either partially or completely. It is after all a simple ball and socket joint; it has certain loads impod on it; it needs reliability over a defined life; it must contain materials suitable for the working environment. [82]Any engineer will recognize the as characteristic of a typical engineering problem,(工程师觉得这是一个典型的机械问题) which doctors and engineers have worked together to solve, in order to bring a fresh lea（租约；租期；租赁物；租赁权）of life to people who would otherwi be disabled.
This typifies the way in which engineers work to help people and create a better quality of life. The fact that this country has the most efficient agricultural industry in the world is another good example. [84]Mechanical engineers have worked with farmers and biologists t
o produce fertilizers, machinery and harvesting systems. This team effort has now produced crops uniformly waist high or less so that they are better suited to [83]mechanical harvesting. Similar advances with other crops have relead people from hard and boring jobs for more creative work, whilst 用不仅还有造句[83]machines harvest crops more efficiently with less waste. Providing more food for the rapidly increasing population is yet another role for the mechanical engineer.
81. According to the passage, when would most weight be impod on hip-joints?
A. When one is walking. B. When one is running.
C. When one is standing. D. When one is lying down.
解析：细节类。第一段开头“when you are running, this force is incread further still”当你跑步的时候，这种受力会加重。关键：读懂题目。就算没有读懂，其他三项也没有提到，因此可以排除。
坐飞机一路顺风
“Do you realize that every time you take a step, the bones in your hip are subjected to for
手工织毛衣ces between four and five times your body weight?”你是否意识到自己每次迈步的时候，胯关节的受力是体重的四至五倍？。此句话的主干是 “Do you realize that”that后面引导一宾语从句。宾语从句的主干是：the bones in your hip are subjected to forces；“every time you take a step”作时间状语从句，between four and five times your body weight作后置定语，修饰前面的forces。
买椟还珠的意思是 *are subjected to易遭受
Steel surfaces are subjected to wetting before painting。
底材表面在涂装前受到湿润。
82. Engineers regard the replacement of hip-joints as a(n) ______ problem.
A. mechanical B. medical
C. health D. Agricultural
解析：细节类。Mechanical : adj. 机械的；力学的；呆板的；无意识的；手工操作的；
engineering n. 工程，工程学 v. 设计；管理（engineer的ing形式）；建造
83. According to the passage, how do engineers contribute to increasing efficiency of the agricultural industry?
A. By working with farmers. B. By working in teams.
C. By growing crops of the same height. D. By making agricultural machinery.
解析：推断类。第二段提到“mechanical harvesting”，“machines harvest crops more efficiently。”可以推断出工程师致力于推进农业的机械化进程。并不因为A.B 而使得效率性高。C 也是达到机械化农业的其中一个因素。Similar advances 指的就是agricultural machinery.
别有洞天什么意思84. According to the context, “This team effort” in Paragraph Two refers to ______.
A. mechanical engineers B. doctors and engineers
C. biologists, doctors and farmers D. farmers, biologists and engineers
解析：指代类。“mechanical engineers have worked with farmers and biologists to produce fertilizers， machinery and harvesting systems”，这个团队的努力包括农场主、生物学家和工程师。
TEXT B：Hello? I’m glad you called
Nowadays, [85A]a cellphone rvice is available to everyone, everywhere. Probably thousands of people have already been using it, 初中议论文范文[85D]立冬演讲稿but I just discovered it, so I’m going to claim it and also name it: Fake Foning. （然而是我刚刚发现它的，所以我打算对此项发现申报享有权，并给它命名为Fake Foning。）
[85B]The technology has been working well for me at the office, but there are infinite applications. Virtually（事实上，几乎）in any public space. （这项技术对我来说在办公室一直很是管用，但是它能无限开发，几乎任何公共空间都没问题：事实上它的用处远不止这些。）
Say you work at a big university with lots of talky faculty members buzzing about. Now, s
ay you need to u the restroom. The trip down the hall will take approximately one hour, becau a person can’t walk into tho talky people without getting pulled aside for a question, a bit of gossip, a new read on a certain line of Paradi Lost.（假设你在一所规模较大的大学工作，周围净是一些多嘴多舌的教职员工—且不提多嘴多舌的学生—整天叽叽喳喳。话说你内紧需要上厕所，你知道，光穿过大厅就得 花费你大约一个小时的时间。这是因为，遇上那些嘴上闲不着的人，不管你愿意不，就得与他们交谈。他们也许会问你一个问题，也许传播点有关某人的流言蜚语， 也许是对某个文学名著的一个句子的一些新的解释。）
