Honesty is a virtue, and telling a lie is morally wrong. But how can you know if someone is {#blank#}1{#/blank#}? The answer is, they're probably not. Traditional economics says that people are rational beings who will lie if it is {#blank#}2{#/blank#} their advantage. A recent university study has shown that, actually, we're pretty honest ―especially {#blank#}3{#/blank#} we're at home.

Researchers in Germany phoned people at home and asked them to toss a coin. There was a strong financial incentive (激励) to fake the result: if the coin landed tails-up, the participant would receive money or a gift voucher, while if the coin landed heads-up, they would get {#blank#}4{#/blank#}. Because they were on the phone, they knew there was no {#blank#}5{#/blank#} of getting caught if they lied. And yet people revealed the truth despite that they {#blank#}6{#/blank#} (receive) nothing. Over hundreds of tosses a coin will land tails-up roughly 50% of the time. In this study over half the people (55.6%) asked said that the coin landed heads-up. Most of them didn't pursue the reward at the {#blank#}7{#/blank#} of honesty.

    Previous studies had found that people were more dishonest. In those laboratory studies 75% of people, {#blank#}8{#/blank#} (include) some who faked the results, reported a winning coin and claimed a reward. So the research team guesses it's being in our own home {#blank#}9{#/blank#} makes us play fair. {#blank#}10{#/blank#}, what motivates people to do so remains unclear.

    On December 19th, 2010, an airbus took off from the capital airport of Saudi Arabia. After about an hour's flight, something {#blank#}1{#/blank#} (believe) happened on the plane. The air hostess was about to serve lunch {#blank#}2{#/blank#} a small mouse stole out from the bag of a young man, which frightened the young woman nearby and she shouted loudly. Then more and more mice came out of {#blank#}3{#/blank#}bag. {#blank#}4{#/blank#}(catch) by surprise, the other passengers all shouted in panic. The steward managed to get in touch with the control center on the ground. With the order from the ground, the plane {#blank#}5{#/blank#}(success) landed at the nearest airport. As soon as the plane was on the ground, all the passengers got off. Then seven specialists got on the plane {#blank#}6{#/blank#}(kill) the mice. Many means had been tried but {#blank#}7{#/blank#} of them were good enough.

    At last, they tried to fill in the plane {#blank#}8{#/blank#} carbon-dioxide, which poisoned all the mice. It {#blank#}9{#/blank#} (report) that the young man wanted to carry the mice to another city and sell them as {#blank#}10{#/blank#}(pet), but he didn't expect they succeeded in escaping from the bag.

    It is not a secret {#blank#}1{#/blank#} trees are vital to our life. They provide us with food, wood and most {#blank#}2{#/blank#} (important), oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria from water.

    The discovery {#blank#}3{#/blank#} (make) by a team {#blank#}4{#/blank#} (consist) of scientists from the Massachusetts Institute of Technology (MIT) and high school students {#blank#}5{#/blank#} were seeking a natural water filter(过滤)—one that would help communities in developing countries that do not have {#blank#}6{#/blank#} (accessible) to modern water filter systems.

    The {#blank#}7{#/blank#} (research), led by Professor Rohit Karnik, decided to turn{#blank#}8{#/blank#} trees for help, because they could allow liquid to flow through, while blocking out air bubbles.

    They began by cutting 1.5-inch-wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood's filtering ability by pouring water containing red dye particles of different sizes through. To their {#blank#}9{#/blank#} (amaze), they found that it was effective in trapping all the particles. Greatly {#blank#}10{#/blank#} (encourage), the team conducted another experiment, this time with water that contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.

    Long ago,there was a mother and a son living in a house.She worked hard every day,{#blank#}1{#/blank#}they were always poor.

    One day,her son stole his friend's bag.“Mom,what do you think of this bag?”His mother praised her son instead of scolding him.The next time,he stole{#blank#}2{#/blank#}overcoat.She praised him again.A few years{#blank#}3{#/blank#}(late),he grew up to be a young man.He stole jewelry and brought them to his mother.This time,she did not scold her son.Then,he started{#blank#}4{#/blank#} (steal) more expensive things.

    One day,the police caught him.Before he{#blank#}5{#/blank#}(put) in prison,he begged the police to meet his mother.They took him{#blank#}6{#/blank#}his mother.As soon as he saw his mother,he suddenly bit her ear.“Ouch!What is the matter with you?”She finally scolded him.Her son answered.“If you had given me a scolding like that when I stole the first bag,I could not {#blank#}7{#/blank#}a thief.”{#blank#}8{#/blank#} (look) at her son heading to prison,“If only I{#blank#}9{#/blank#}turn back time,I would scold him severely.”She said{#blank#}10{#/blank#}(regret).

    According to Xinhua News Agency, the Palace Museum and Huawei signed a strategic cooperation agreement on March 15. The two sides will set an example {#blank#}1{#/blank#} 5G application.

    The Palace Museum received more than 17 million visitors in 2018, {#blank#}2{#/blank#}(make) it the most visited museum in the world. In the past 20 years, an office information network covering the whole museum {#blank#}3{#/blank#}(build) gradually. The museum has developed an App that provides an in-depth {#blank#}4{#/blank#}(explain) of cultural relic information and cultural services. Also, the museum has research on the application of VR, AR, AI and other {#blank#}5{#/blank#}(technique) in museums.

    {#blank#}6{#/blank#}signing of the agreement marks a new chapter in the strategic cooperation between the Palace Museum and Huawei Technologies Co. So, Huawei will make efforts {#blank#}7{#/blank#}(accelerate) the intelligent construction of the Palace Museum.

    "The 600-year-old Palace Museum has never been so close to science and technology," Shan Jixiang said {#blank#}8{#/blank#}(proud), director of the Palace Museum.

    Shan shared many ideas about the 5G Palace Museum. With the help of advanced technology, {#blank#}9{#/blank#}is expected that in the future, audiences around the world will be able to experience and visit the Palace Museum, whether it is a field trip or a virtual tour. Also, the use of AI technology provides a {#blank#}10{#/blank#}(broad) platform and stronger knowledge support for cultural relics among young people.

    During World War II, I lived in Amsterdam in the Netherlands. My family was Jewish,{#blank#}1{#/blank#}we had been hidden away for a year and a half. During that time I hadn't been able to be outdoors for so long{#blank#}2{#/blank#} I had grown so crazy {#blank#}3{#/blank#}everything to do with nature. Once, I decided to look at the moon at midnight. But I didn't dare{#blank#}4{#/blank#} (open) the window to see the night face to face {#blank#}5{#/blank#} I was afraid of{#blank#}6{#/blank#}(discover) by the Nazis. I felt very lonely {#blank#}7{#/blank#}seeing my old friends. So I had to make a new true friend, my diary Kitty,{#blank#}8{#/blank#} I could tell everything to.{#blank#}9{#/blank#} (fortune), at last my family were discovered and{#blank#}10{#/blank#}(catch) by the German Nazis half a year later.