首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
more smoothly空格前是动词ride,推测应填入修饰骑行动作的副词。录音原文中指出it made the ride so much easier“这使得骑车更容易”,其中,easier是题目中的原词复现。后一句是you could ride a
more smoothly空格前是动词ride,推测应填入修饰骑行动作的副词。录音原文中指出it made the ride so much easier“这使得骑车更容易”,其中,easier是题目中的原词复现。后一句是you could ride a
admin
2022-09-09
65
问题
Good afternoon, ladies and gentlemen. I’d like to take this opportunity to welcome you to our exhibition, "Two Centuries of the Bike". Let’s stroll around the exhibition, shall we?
Although there were a few early efforts back in the 1700s, you didn’t really see many bikes till, say, the 1830s in England. Bikes were a response to the rapid growth of cities early in the 19th century. Cities like London were getting too big to walk across! The early bike
let people travel with less effort than walking
. Plus a bike was a lot cheaper than a horse!
Think of it. No one invented a bike for, what, five thousand years of human history? Why did people do it then? Probably because this was the start of the Machine Age: people wanted machines to do all the work. There were some drawbacks, however. For one thing, there were no pedals. You simply pushed yourself along using your feet. Kind of like today’s skateboard. That meant you went fairly slowly. And uphill, you actually worked harder, pushing that two-wheeler. Plus, the wheels were made of wood covered with metal, as you can see from this model. So the
downside was that the ride was quite uncomfortable
on most roads. Only a few gadget lovers had or used them.
By the 1860s, though, improvements were being made
. As you can see from this specimen, metal frames had become the rule. They’re more durable than wood, and they don’t warp in the rain.
The biggest improvement, however, was the development of the chain and sprocket system. They are connected
. This meant you did not push the bike. You used pedals just like today. You had to try harder to balance, so it took some practice to figure out how to use the pedals.
But it made the ride so much easier
. As a result,
the good thing was that you could ride a lot more smoothly and with very little effort
.
By the 1880s, another big change was the use of rubber wheels
. These became pretty common at that time. Though the first ones were solid rubber, the ride was a good deal more comfortable than the old iron and wood system. This is a big consideration because the faster you go, the more you feel every bump. Air-filled tyres-’pneumatic tyres’ —didn’t really come into use till around the year 1900, as you can see from this exhibition over here. That made the ride even more comfortable.
So, by 1890 or so, people were going a lot faster and a lot more smoothly. There was one problem when you were going quickly and comfortably: ’OH NO! HOW DO I STOP?’ Yes, we all laugh now. But for a long time, the only way to stop was drag your feet. That didn’t work very well and it would be dangerous if you were going fast. In the crowded cities of those years —New York, Chicago, and so on, you would get killed if you couldn’t stop for, say, a streetcar. Plus look at this bike. The front wheel is nearly a metre and two thirds tall! They made them that way so you could see over people and wagons. But you couldn’t drag your feet. This model is called a ’velocipede’ —a ’speed pedal’. Another characteristic of the bike in this period is that it has two equal-sized wheels, which signalled a big change in bikes.
For with the velocipede, brakes appeared. If you wanted to stop, you just pushed the pedal backwards. Doing that stopped the back wheel of the bike. This technique worked a lot better than dragging your feet or jumping off the high seat there!
This meant that bikes became a great deal safer
. It would have been safer if people wore helmets, but the first bicycle helmet wasn’t invented until years later, and even then it was little more than a leather ballcap. It really wasn’t until the 1970s that the bike helmet was modified to provide some real protection.
Before continuing on to look at developments since the 1890s, let’s say a word more about safety. Everyone knows if you’re going downhill, you can get going dangerously fast. To go more than a hundred kilometres an hour isn’t all that difficult! But even on level ground, it’s easy to go too quickly. On a city street, today’s bicycles can be ridden at a speed of over forty miles an hour, over a short distance. That’s about sixty-four kilometres an hour. Remember you’re on a bike, not in a car. There’s nothing to protect you. People are killed in single-bicycle accidents every day, just from hitting the road.
A good rule to remember is if you’re going faster than the cars, slow down. And please wear a helmet. Nearly one quarter of the epilepsy cases come from head injuries in accidents on bikes and motorcycles. I didn’t mean to scare you, but safety is everyone’s business.
What? Now that’s a good question. Why are today’s bikes so much faster? Well, it’s not just that today’s athletes are faster. The answer is partly mechanical. If you look closely here, at the back wheel you’ll see a number of gears.
Changing gears is what makes those fast speeds possible
. You can shift gears depending on the terrain and how hard you wish to pedal.
So you can put it on a higher gear for downhill
, and a lower gear for uphill travel to make it easier to climb that slope.
You’ll notice this gear-shifting mechanism is attached at the back wheel
, and when the rider shifts on the handlebar gear shifter, the chain moves to the appropriate sprocket. And, speaking of changing gears, let’s look over here at our "Tour de France" exhibit...
选项
答案
more smoothly
解析
空格前是动词ride,推测应填入修饰骑行动作的副词。录音原文中指出it made the ride so much easier“这使得骑车更容易”,其中,easier是题目中的原词复现。后一句是you could ride a lot more smoothly“你可以更加平稳地骑车”,这里出现了比较级more smoothly,故答案为more smoothly。
转载请注明原文地址:https://kaotiyun.com/show/GhnD777K
本试题收录于:
雅思听力题库雅思(IELTS)分类
0
雅思听力
雅思(IELTS)
相关试题推荐
请编写函数fun,函数的功能是:将放在字符串数组中的M个字符串(每串的长度不超过N),按顺序合并组成一个新的字符串。例如,字符串数组中的M个字符串为AAAABBBBBBBCC则合并后的字符串的内容应是:AA
给定程序MODI1.C中fun函数的功能是:将p所指字符串中每个单词的最后一个字母改成大写。(这里的“单词”是指由空格隔开的字符串)。例如,若输入“Iamastudenttotaketheexamination.”,则应输出“Ia
下列给定程序的功能是:读入一个英文文本行,将其中每个单词的第一个字母改成大写,然后输出此文本行(这里”单词”是指由空格隔开的字符串)。例如,若输入”Iamastudenttotaketheexamination”,则应输出”IAmASt
请在考生文件夹下选择相应的命令,并按题目要求完成下面的操作。具体要求如下:注意:下面出现的所有文件都必须保存在考生文件夹下。在考生文件夹下的“Acc1.mdb”数据库中已建立“职工”和“部门”两张表。试按以下要求完成表的各种操作:(1)设置表对象“职
考生文件夹下存在一个数据库文件“samp2.mdb”,里面已经设计好表对象“tTeacher”、“tCourse”、“tStud”和“tGrade”。试按以下要求完成设计:(1)创建一个查询,按输入的教师姓名查找教师的授课情况,并按“上课日期”字
考生文件夹下存在一个数据库文件“samp2.mdb”,里面已经设计好三个关联表对象“tStud”、“tCourse”、“tScore”和一个临时表对象“tTemp”。试按以下要求完成设计:(1)创建一个查询,按所属院系统计学生的平均年龄,字段显示
考生文件夹下存在一个数据库文件“samp3.accdb”,里面已经设计好表对象“tCollect”,同时还设计出以“tCollect”为数据源的窗体对象“fCollect”。试在此基础上按照以下要求补充窗体设计:在窗体页脚节区位置添加一个命令按钮,命名
Severaldaysago,Icameacrossastrangerinthestreetwhostoppedandaskedmedirections.I【C1】________toshowhimthewayt
Wemaylookattheworldaroundus,butsomehowwemanagenottoseeituntilwhateverwe’vebecomeusedtosuddenlydisappears.
ItwasClark’sfirstvisittoEngland,andhewaslookingforwardtohisfirstjourneyonLondon’sUndergroundRailway.Against【
随机试题
从2007年8月15日开始,储蓄存款利息所得个人所得税的适用税率减按____的比例税率执行。
女性,25岁,低热,便秘腹泻交替3年,查:右下腹5em×5em肿块,质中等,较固定,轻压痛。
不属于肺炎链球菌致病物质的是()
陆某以其8岁的儿子陆义为被保险人投了一份5年期的人身保险,指定受益人为其妻子李某,合同履行两年后陆某与李某离婚,陆义由父亲陆某抚养。后陆义被陆某的表弟佘某收养,不久陆义患病住院,由于医院的重大失误,致使陆义手术后落下终身残疾。依照《保险法》,下列有关保险金
见票即付的汇票,自出票日起()内向付款人提示付款。
在准备采取直复营销活动时,直复人员必须()。顾客寿命价值并不在于他某一次购买产品的数额,而是他()。
某车间单一生产产品,共有车床10台,全年工作日为256天,两班制,每班工作8小时,设备计划修理时间占工作时间的15%,每台机器每小时生产20件产品,那么该设备的年生产能力是()件。
佛教在世界的传播分三条路线,其中南传佛教以()为主。
下列自然资源只能属于国家所有的是
系统规划与管理师的最终职责是确保整体目标完成,如果团队成员无法完成任务,一般有以下原因,下列说法错误的是()。
最新回复
(
0
)