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The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving—started to dull as early as age 27.

出自-2016年6月阅读原文

Steamships captured the North Atlantic passenger business from sail in the 1840s because of its much greater speed.

出自-2014年6月阅读原文

The high cost of steam and the lesser need for speed kept the majority of the world's ocean freight moving by sail until the early years of the 20th century

出自-2014年6月阅读原文

If you could move at the speed of light, your time would stand still.

出自-2011年6月听力原文

A search is now under way to confirm the suspected existence of particles of matter that move at a speed greater than light, and therefore, might serve as our passports to the past

出自-2011年6月听力原文

Earlier this morning, the office asked for the public's help to measure their speed results, saying consumers deserved to get the speeds they were promised.

2017年6月四级真题（第二套）阅读 Section A

Even when they stay on the right side of the law, Internet providers arouse customers' anger over bandwidth speed and cost.

2017年6月四级真题（第二套）阅读 Section A

If you've got a good car that can go at a high speed, then it's really nice to do that.

2016年6月四级真题（第二套）听力 Section B

Obviously, when driving through a residential area or where there's a school, you've got to have speed policemen.

2016年6月四级真题（第二套）听力 Section B

One early problem faced by Internet users was speed.

2017年12月四级真题（第三套）阅读 Section A

Or like speeding, it's very easy to put speed cameras in certain places.

2016年6月四级真题（第二套）听力 Section B

Speed, of course, is essential to the drive-through experience, and drive-throughs are hugely important to chains such as McDonald's, Burger king and Taco Bell.

2018年6月四级真题（第一套）听力 Section A

The team found that exerciser educed the speed of rapid eye movements by about 8%, preventing their ability to capture new visual information.

2017年6月四级真题（第三套）阅读 Section A

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.

出自-2015年12月阅读原文

In the old days, we didn't much write like talking because there was no mechanism to reproduce the speed of conversation.

出自-2014年6月阅读原文

If the collapse of the rain forests speeds up dramatically,it could eventually release 3.5-5 billion metric tons of carbon into the atmosphere each year - making forests the leading source of greenhouse gases.

出自-2013年6月阅读原文

To increase the volume and the speed with which we move natural resources through the consumer economy to the junk pile or the waste heap.

出自-2013年12月听力原文

After repeating the question, she explained that the sufficient number of security guards would be working at peak hours to speed things along

出自-2012年12月听力原文

It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

出自-2010年12月听力原文

Civilian aviation is being disrupted, not by the age-old desires for speed, romanticism and glamour, but by the pressing need to respond to a changing climate.

2019年6月六级真题（第二套）阅读 Section A

Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.

2017年12月六级真题（第二套）阅读 Section B

give the right computer a massive database of faces, and it can process what it sees—then recognize a face it's told to find—with remarkable speed and precision.

2018年6月六级真题（第一套）阅读 Section C

Manufacturers in America valued "speed to market" more than in other countries, the report found.

2015年12月六级真题（第二套）听力 Section C

Only a small fraction of the population was literate, but the production of books grew at an extraordinary speed.

2017年12月六级真题（第一套）听力 Section B

Protein can give them the edge they need to speed that process.

2019年12月六级真题（第二套）阅读 Section B

Protein can speed the repairing of damaged muscles.

2019年12月六级真题（第二套）阅读 Section B

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.

2015年12月六级真题（第一套）阅读 Section B

These fears are mostly exaggerated: as with hysteria about genetic modification, we humans are generally wise enough to manage these problems with speed and care.

2018年6月六级真题（第三套）阅读 Section A

They scanned the brains of teens and adults who were playing a virtual driving game designed to test whether players would brake at a yellow light or speed on through the crossroad.

2018年6月六级真题(第二套)阅读 Section B

A sudden stop can be a very frightening experience, especially if you are travelling at high speed.

2016年高考英语浙江卷（6月） 单项选择 原文

Animals are built of many different materials----skin, fat, and more----and light moves through each at a different speed.

2015年高考英语北京卷 阅读理解 阅读C 原文

But compared with previous studies, she finds the speed of breaking down in this one exciting.

2018年高考英语北京卷 阅读理解 阅读C 原文

China's high-speed railways are growing from 9,000 to 25,000 kilometers in the past few years.

2018年高考英语北京卷 单项填空 原文

Every time light moves into a material with a new speed, it bends and scatters.

2015年高考英语北京卷 阅读理解 阅读C 原文

For most of the last century, the car represented what it meant to be American—going forward at high speed to find new worlds.

2018年高考英语浙江卷 阅读理解 阅读C 原文

I could only have left it on the G9 bus, which was now speeding in the dark to some unknown station.

2019年高考英语天津卷 完形填空 原文

The tasters move down the line with surprising speed, tasting from a spoon and deciding what is a fair price for each tea.

2015年高考英语全国卷2 听力 原文

These include custom-made navigation tools, night vision systems and intelligent speed adaptations.

2017年高考英语全国卷3 阅读理解 阅读D 原文

We're looking at the benefits of systems which control their speed as a way of preventing that.

2017年高考英语全国卷3 阅读理解 阅读D 原文

Wales has introduced special low speed limits to minimize pollution.

2020年考研真题（英语二）阅读理解 Section Ⅱ

We unconsciously associate fast food with speed and impatience and carry those impulses into whatever else we're doing.

2013年考研真题（英语二）阅读理解 Section Ⅱ