When scientists set out to explore the roots of human laughter, some apes（类人猿） were just tickled（胳肢）to help. That’s how researchers made a variety of apes and some human babies laugh. After analyzing the sounds, they concluded that people and great apes inherited laughter from a shared ancestor that lived more than 10 million years ago. Experts praised the work, it gives strong evidence that ape laughter and human laughter are related through evolution（进化）.

Scientists have noted that apes make characteristic sounds during play or while being tickled, especially to signal that they’re interested in playing. It’s been suggested before that human laughter grew out of primate（灵长类动物） roots. But ape laughter doesn’t sound like human laughter. It may be slower noisy breathing. So what does that have to do with the human ha-ha? To investigate that, Marina Davila Ross and her colleagues carried out a detailed analysis of the sounds made by tickling three human babies and 21 other primates, apes included.

After measuring 11 features in the sound from each species, they tried to find out how these sounds appeared to be related to each other. The result looked like a family tree. Significantly, that tree matched the way the species themselves are related, the scientists reported online in the journal Current Biology. They also concluded that while human laughter sounds much different from ape laughter, their typical features could have come from the same ancestor.

Panksepp, who studies laughter-like responses in animals but didn’t participate in the new work, called the paper exciting. Panksepp’s own work concludes that even rats produce laughter in response to playing and tickling, with sounds that can hardly be heard by people. Robert Provine, a scientist, who wrote the book, Laughter: A Scientific Investigation, said the new paper showed some important clues, like ape sounds that hadn’t been realized before.

69. Why did the scientists analyze the laughter made by tickling human babies and apes?

A. To try to discover if they can make characteristic sounds.

B. To see if they interested in playing.

C. To find out if the laughter of apes and humans is related.

D. To find out the differences between humans and apes.

70. Based on Paragraph 3 we can know that researchers measured the features in the sound to ________.

A. find out ape sounds that hadn’t been realized before

B. find out relations among primates’ laughter

C. see what a family tree from each species looks like

D. make a report online in the journal Current Biology

71. What can be inferred from the last paragraph?

A. Panksepp spoke highly of the new research.

B. Rat laughter is likely to be related to ape laughter.

C. Robert Provine provided some new clues for the researchers.

D. Humans don’t enjoy listening to ape laughter.

72. What would be the best title for the passage?

A. Ape study explores evolution of laughter.

B. Apes like to laugh when being tickled.

C. Human laughter and ape laughter are different.

D. Laughter: A Scientific Investigation.

Saying “thank you” is probably the first thing most of us learn to do in a foreign language. After all, we’re brought up to be polite, and it is important to make a good impression upon other people — especially across national divides.

So, what exactly are you supposed to say when “thank you” is only the 20th most popular way to express gratitude? According to a recent survey, 19 other ways of expressing appreciation finished ahead of “thank you” in a poll of 3,000 people.

Pollsters(民测调查员) found almost half of those asked preferred the more informal “cheers”, while others liked to use such expressions as “ta”, “great” and “nice one”.

So, just what is the appropriate form of words to express your thanks?

Fortunately, the clue is in the language itself. “Cheers”, despite its popularity, is considered an informal way to say thank you — and this is a definite clue as to when you can best use it.

For instance, when going for a drink with friends, a smile and a “cheers” by way of thanks is not only appropriate to the situation, it is also culturally accurate.

“Ta”, originated from the Danish word “tak”, was the second-most popular expression of thanks, and is also commonly used in informal situations, along with phrases such as “nice one”, and “brilliant”. Interestingly, one word that didn’t make it into the top 20 was “thanks”, Thank you is shorter, more informal cousin.

“Thanks” can be useful, as it is able to bridge the divide between the formality of “thank you” and the downright relaxed “cheers”.

Certain words can double as an expression of thanks as well as delight. Again, the words themselves offer the clue as to when best to use them.

For example, words like “awesome”, “brilliant” and “you star” featured highly in the new poll and they can hint at both your pleasure at someone’s action, as well as serving to express your thanks. If you are on the receiving end of a “new” thank you, you can respond with a simple “no problem”, or “sure”.

Of course, in certain circumstances, a simple wave, nod or smile may be appropriate. For instance, if a car driver slows down to let you cross the road, simply raising your hand in acknowledgement is enough to show that you appreciate the driver’s consideration.

Sometimes, formality is necessary, and “thank you” is still the best choice in such situations. But students should not worry about when exactly to use certain expressions.

Many people in Western countries are worried that good manners are in decline. People are tired of seeing their acts of kindness and service pass without comment. So don’t think your “thank you” is clumsy or awkwardly formal. The chances are, if you said “thank you”, you made someone’s day. You star.

1.We can tell from the results of the poll that __________.

A．people are unconcerned about politeness nowadays.

B．“thank you” remains the best expression of gratitude.

C．there is a variety of expressions of appreciation.

D．there are more formal expressions than informal ones.

2.According to the passage, which is an appropriate response to “awesome” or “brilliant”?

A．Thanks.           B．Sure.             C．Nice one.          D．Cheers. .

3.In the last paragraph the author encourages people to          .

A．show their gratitude to others.             B．behave themselves well.

C．continue their acts of kindness.             D．stop worrying about bad manners.

4.Which of the following can serve as the best title of this passage?

A．How to Appear More Polite .               B．Ways to Show Gratitude.

C．Never hesitate to Say “Thank You”.        D．Good Manners in Decline!

London taxis, with their friendly drivers who actually know where they are going, are ranked best in the world, according to an annual taxi poll(调查).
The survey by travel website hotels.com found London taxis, despite being the most expensive, beat rivals across the globe to head the list for the third consecutive years, scoring a total of 59 percent in votes on several categories by travellers.
London taxi drivers were voted both friendliest and most knowledgeable. Drivers in the English capital must pass a rigorous examination called The Knowledge to earn their taxi licence.
New York’s yellow taxis came second in the list, scoring 27 percent which was up 10 percentage points from last year even though Manhattan’s cab drivers tied with Parisian taxi drivers as the rudest.
Travellers said New York had the most available taxis.
Cabbies in Rome were voted the worst drivers in the world with almost one in 10 travellers thinking the Italian capital had the world’s worst taxi drivers when it came to the quality of driving.
“Travelling by taxi is one of the first experiences that many travellers have upon arrival in a new city. In fact, the research found that cabs are by far the most popular method of travelling from the airport to their hotel,” a spokesman for hotels.com said in a statement.
The global poll scored city based taxis for their levels of cleanliness, value, quality of driving, knowledge of the area, friendliness, safety and availability.
Rounding out the top five were Tokyo with a total score of 26 percent, Berlin with 17 percent, and Bangkok famed for its tuk-tuks scoring 14 percent.
Madrid’s taxis were ranked sixth in the poll, followed by Copenhagen and Dublin with 11 percent and Frankfurt and Paris with 10 percent.
Taxis in Sydney fell short of the top 10, scoring badly in the areas of value for money, availability and knowledge of the area.
The survey for hotels.com, part of the Expedia group, was conducted among over 1,900 travellers between May 11-28 this year.
【小题1】What does the underlined word “rigorous” in the third paragraph mean _______?

The necktie looks set to follow the top hat in being handed over to the fashion museum by office workers within the next 50 years, according to research.
Nearly three quarters (74%) think the tie will not survive within British firms beyond the next half a century with the popularity of the open-collared shirt. Its demise is being blamed on the boom in creative businesses, such as Facebook and Google, and online trading companies where formal dress codes tend to be avoided in favour of a more casual approach.
Once considered an important part of business dress, the tie has become a victim of the spread of "casual Fridays" into other weekdays, according to researchers.
The poll, by Deal Jungle. com, which helps small and medium enterprises, found more than half (51% ) thought the tie would die out in offices within the next 20 years and almost a quarter (22%) believed it would last less than 10 years.
A spokesman for the site, which has 20, 000 registered members, said: "Ties have been around seemingly forever but increasing numbers of office workers are telling them to get away."

"The success of businesses such as Facebook and Google, where even the CEO turns up wearing jeans and a hoodie, also seems to have had a corrosive (侵蚀性) effect on the idea of dressing formally for work."
"Many of our members keep their expenses to a minimum by working from home so they feel no need to dress up to go to work. We know that when they meet with clients, they still put on a business suit, but a tie is no longer seen as an essential part of the suited-and-booted look."
"Instead, many businessmen and increasing numbers of executives choose a suit and shirt with an open collar. The tie-less suit creates an impression of a more approachable deal maker, someone who is still business-minded, yet creative and technology-sensible, too. "
【小题1】Why are ties expected to disappear in offices?