When you are waiting for a bus at a station, a 31-metre-long bus is coming to you. You must be surprised. In fact, the 31-metre-long bus is the longest bus in the world. And the bus comes from Germany. An ordinary bus is only about 10 metres long and it can carry only 80 people once. But the longest bus can carry 256 people. So we will need fewer buses in the future. The longest bus can save energy, too. That's to say, it will take less energy than an ordinary bus. Moreover, the driver can drive the longest bus as easily as an ordinary one.

    However, firstly, it has to spend $ 10, 000, 000 buying the longest bus. Someone jokes that we can buy a lot of ordinary buses with that money. Secondly, people think that it is hard for the longest bus to travel on the bustling streets. It may cause new traffic problems. Thirdly, it is easy for someone to get onto the bus without buying a ticket.

    XBOX 360 Kinetic, RoboSapien, WiiParty, theseare just a few of the modern toys sold in recent years. But some of the most populartoys are actually quite old.

Gameshave been around for thousands of years. In 4000 B. C, Babylonians played a boardgame that was similar to chess. Yo-yos made of stone were first used in ancientGreece around 1000 B C. And kites appeared in China around the same time.

    Another famous game is Scrabble. It was inventedby an architect in the 1930s, but it didn't get popular until 1953 And since then,more than 100 million sets have been sold worldwide.

    As you can imagine, toys and games are a multi-billion-dollarindustry. Mr. Potato Head, the first toy advertised on TV, grossed more than $4million in its first year. Play-Doh made its inventor Joseph McVicker a millionaireby his 27th birthday, while Mattel sells 1. 5 million Barbie dolls each week (that'stwo dolls each second!).

    Some toys go out of fashion, but then becomepopular again, such as Rubik's Cube. Research says parents are increasingly choosingto buy toys they remember from their own childhood.

    These days, toys are not just for fun. RoboSapienis a remote-controlled robot that was launched in 2004. He can walk, turn aroundand do other poses. RoboSapien was designed by Mark Tilden, who once created robotsfor NASA space missions. He expected the toy to be used mostly by and scientists,but almost 2 million RoboSapiens have been sold worldwide since its launch as atoy?

    Fancy a game anyone?

You can relax if remembering everything is not your strong suit. Recent research makes the case that being forgetful can be a strength — in fact, selective memory can even be a sign of stronger intelligence.

Traditional research on memory has focused on the advantages of remembering everything. But looking through years of recent memory data, researchers Paul Frank and Blake Richards of the University of Toronto found that forgetting can be just as important to our decision-making as what our minds choose to remember.

Making intelligent decisions does not mean you need to have all the information at hand, it just means you need to hold onto the most valuable information. And that means clearing up space in your memory palace for the most up-to-date information on clients (客户) and situations. Our brains do this by generating new neurons (神经元) in our hippo-campus (海马体), which have the power to overwrite existing memories that are influencing our decision-making.

When we forget the names of certain clients and details about old jobs, our brain is making a choice that these details do not matter. Although too much forgetfulness can be a cause for concern, the occasional lost detail can be a sign of a perfectly healthy memory system. The researchers found that our brains further decision-making by stopping us from focusing too much on minor past details.

If you're an analyst who meets with a client weekly, your brain will recognize that this is a client whose name and story you need to remember. If this is someone you may never meet again, your brain will weigh that information accordingly.

We can get blamed for being absent-minded when we forget past events in perfect detail. These findings show us that our brains are working smarter when they aim to remember the right stories, not every story.

What are the Chinese astronauts' lives like? Do they do the same things in s_46 as we do on Earth?

The answer is yes. They do most of the things we do on Earth. But they do something [ʌn' ju:ʒuəl] {#blank#}1{#/blank#}. When their ship reaches a certain area, they can see the sun go up and down every 45 minutes. And they can have fun, too. They can s{#blank#}2{#/blank#} some time watching movies and talking to their families. In this way they will n{#blank#}3{#/blank#} feel bored.

Of course, they will do exercise to make sure that they will not get {#blank#}4{#/blank#}[ wi:k]. Because we can't send a doctor up there!

When it's time for sleep, astronauts have to sleep in bags. They t{#blank#}5{#/blank#} themselves to the bags so that they will not float away in their sleep.

Giving hongbao ( red packets ) is a tradition in China . Traditional red packets are 1 decorated with gold Chinese characters (汉字) such as 2 and wealth.

How red packets are used

During Chinese New Year , 3 is/ are put inside the packets which are then 4 to younger generations by their grandparents , parents , relatives , and even close neighbors and friends.

The5 .

Red represents (代表) luck in Chinese culture. That is why red packets are used during Chinese New Year and other celebrations.

How to give and receive red packets

It is a 6 act to give and receive red packets . So red packets are always 7 and received with both hands.

Someone who receives à red packet at Chinese New Year or on his or her birthday should not 8 it in front of the giver. However, things are 9 at a Chinese wedding(婚礼), where the guests usually give the red packets to the attendants and sign their 10 on a long piece of paper. The attendants will open the packets at once, count (点数目) the money inside, and record it on a register (登记簿) next to the guests' names.