Sending packets, shopping for everyday goods and even building a house, these are new skills that new robots show at the World Robot Exhibition.

    Beauty sleep is a real thing, researches have shown that people who have enough sleep look more attractive (有魅力的) to others.

    A few bad nights are enough to make a person look especially "more ugly", their sleep experiments show.

    The researchers asked 25 university students to join in their sleep experiment. They were asked to get a good night's sleep for two nights.

    A week later, they were asked to sleep for only four hour every night for two nights in a row. The researchers took make—up free (素颜) photos of the volunteers after both the good and the bad sleep.

    Next, they asked 122 strangers to have a look at the photos and judge (评价) them on attractiveness, health, and sleepiness, as well as asking them: "How much would you like to make friends with this person in the picture?"

    The strangers were good at judging whether the person they were looking at was tired, and if he was sleepy, his attractiveness score would be low.

    The strangers also said they wouldn't want to socialize with the tired students. The researchers say this is natural for people. An unhealthy-looking face makes people run away. In other words, people don't want to hang around with people who might be ill.

    Dr Brewer, an expert at the University of Liverpool said: "Judgment of attractiveness is often unconscious (无意识的), but we all do it, and we are able to judge on even something small like whether someone looks tired or unhealthy. This study is a good reminder of how important sleep is to us."

    Started in 1636, Harvard University is the oldest of all the colleges and universities in the United States. {#blank#}1{#/blank#}

    In the early years, these schools were much alike. Only young men went to college. {#blank#}2{#/blank#} Little was known about science then, and one kind of school could teach everything that was known about the world. When the students graduated, most of them became ministers or teachers.

    In 1782, Harvard started a medical school for young men who wanted to become doctors. Later, lawyers could receive their training in Harvard's law school. {#blank#}3{#/blank#} Soon it began teaching American history.

    As knowledge increased, Harvard and other colleges began to teach many new subjects. {#blank#}4{#/blank#}

    Today, there are many different kinds of colleges and universities. {#blank#}5{#/blank#} There's so much to learn that one kind of school can't offer it all.

A. In 1825. besides Latin and Greek, Harvard began teaching modern languages, such as French and German.

B. Most of them are made up of smaller schools

C. Yale, Princeton and Columbia were opened soon after Harvard

D Students were allowed to choose the subjects that interested them

E. All the students studied the same subjects, and everyone learned Latin, Greek and Hebrew

A dictionary is very useful for the people who are learning English. People will use a dictionary for help when they have difficulty in reading a passage or doing English exercises. You will make more progress if you know how to use a dictionary efficiently（有效地）. {#blank#}1{#/blank#}

Choose a suitable（合适的）dictionary. {#blank#}2{#/blank#}You can choose a dictionary which is suitable for your English level，needs and interests，For a middle school student in Grade 9

Try to guess the meaning of a new word before you use a dictionary. You may have had such an experience when you are reading a passage. There're some new words in it and you have difficult it understanding the full passage. What will you do in this situation? {#blank#}3{#/blank#}

Learn culture from a dictionary. You don't just learn a new word's pronunciation，meaning，part of speech and other usages. {#blank#}4{#/blank#}

A dictionary is a good friend for learning English. It's a waste for you not to use a dictionary in your study. But don't think the more you use a dictionary，the better result you can get. {#blank#}5{#/blank#}

If you can do as I have told you，I think you will improve your English soon. 

Sijo Zachariah comes from India and he works in Dubai. Last year, Zachariah returned to India for a wedding ( 婚礼). However, he got stuck ( 困住) there because of COVID-19.

'There was almost no food available in stores," he said. What's going to happen? How are we going to feed ourselves?" From that thought, Zachariah and his father started planting food on the land in front of their house. They took seeds (种子) from all of the fruit and vegetables they could find. Zachariah watched helpful videos online.

In the end, the land didn't just help the father and son. It helped feed people in 20 homes nearby. We also taught our neighbors how to plant. food," Zachariah said. Soon every home was planting food. The hot, wet weather made growing easy.

Zachariah once studied and worked in Wales. One thing he really liked there was the food. It tasted better than food at home. He found the reason the food there was fresh and local. So 'he only planted food that was from his hometown. He also recorded videos to teach others.

Now Zachariah is planning to change his job. He will stop fixing (修理) planes for living. He will plant food. "It' s a big change for me. But this is what makes me happy—helping others and being in nature," he said.