{#blank#}1{#/blank#} (exact) when the first people arrived in what we now know as California，no one really knows. However, {#blank#}2{#/blank#} is likely that Native Americans were living in California at least fifteen thousand years ago.

Scientists believe that these first settler {#blank#}3{#/blank#} (cross) the Bering Strait in the Arctic to America {#blank#}4{#/blank#} means of a land bridge which existed in prehistoric times. In the 16th century, after the {#blank#}5{#/blank#} (arrive) of Europeans, the native people suffered greatly. Thousands were killed or forced into slavery. In addition, many died {#blank#}6{#/blank#} the diseases brought by Europeans. However, some survived these terrible times, and today there are more Native Americans {#blank#}7{#/blank#} (live) in California than in any other state.

    In the 18th century, California was ruled by Spain. Spanish soldiers first arrived in South America in the early 16th century. Two centuries later, the Spanish had settled in most parts of South America and along the northwest coast of {#blank#}8{#/blank#} we now call the United States. Of {#blank#}9{#/blank#} first Spanish to go to California, the majority were religious men, whose ministry was {#blank#}10{#/blank#} (teach) the Catholic religion to the natives.

    Harvard is one of the most famous educational institutions in the world and many people want to study there. The problem is that most applicants don't follow the advice that will most likely get them {#blank#}1{#/blank#} (pick).

    One of the most important things you should remember when {#blank#}2{#/blank#} (apply) to Harvard is that THEY WANT YOU TO HAVE A LIFE. This is probably the main requirement after your grades. The best situation is that you are a {#blank#}3{#/blank#} (nature) leader with lots of activities and active social life. Another important thing to remember is that you have to promote (推销) {#blank#}4{#/blank#} (you) but in a reasonable manner. You should be aware of your strengths and {#blank#}5{#/blank#} (weak). Grades are very important but they are not everything. Try to gain a great school record from your high school years, take extra courses that are interesting, and enjoy life. {#blank#}6{#/blank#} rest will come naturally.

    Last but not least, let's pay attention {#blank#}7{#/blank#} the interview. You should be respectful and most importantly, show real interest in the school (not only the name). {#blank#}8{#/blank#} is a matter of luck to get an interviewer who shares common interests with you. The thing with the interview is that Harvard {#blank#}9{#/blank#} (receive) applications from hundreds, if not thousands of students with the same grades. This means the interview is your chance to show {#blank#}10{#/blank#} you are unique.

    Over time, many flowering plants and {#blank#}1{#/blank#} (they) animal pollinators(传粉昆虫) have evolved together. The plant needs the animal to pollinate it and the animal {#blank#}2{#/blank#} (reward) with food called nectar when it visits the flowers. Pollen becomes {#blank#}3{#/blank#} (attach) to the animal during its visit to a flower{#blank#}4{#/blank#} is then passed on to another plant's blossom on its next visit. So pollination takes place, therefore {#blank#}5{#/blank#} (increase) the chances of the survival of the plant species.

    The type of pollinator {#blank#}6{#/blank#} (depend) on the characteristics of the flower such {#blank#}7{#/blank#} its colour, shape, size and smell. For example, yellow flowers attract bees, while red flowers attract {#blank#}8{#/blank#}  (butterfly). The nectar in some flowers can only be reached by a bird {#blank#}9{#/blank#} a long bill or a long-tongued moth or butterfly. Flowers that attract bees often have a special way {#blank#}10{#/blank#} (guide) the bees to the nectar inside.

    For many young people, going to university is one of the most important {#blank#}1{#/blank#} (stage) of their lives. It is the time when young people will move out of {#blank#}2{#/blank#} (they) home to live with other people, often strangers. {#blank#}3{#/blank#} (especial) in the U.S, people often travel very far {#blank#}4{#/blank#}home to study. It is a time to be {#blank#}5{#/blank#} (independence).

    At university, you will {#blank#}6{#/blank#} (teach) by lectures and professors who are leading figures in their study. The opportunity to learn from and to discuss with them is {#blank#}7{#/blank#} drives some people to apply to university. Students are required to choose a major that they wish to study. Apart from the {#blank#}8{#/blank#} (academy) benefit, life at university also can allow students {#blank#}9{#/blank#}(develop) their interests in many fields.

    Therefore， university is a place {#blank#}10{#/blank#} you attain knowledge, develop your values and accept those who may be different.

    The Amber Room, an{#blank#}1{#/blank#} (amaze) treasure, which was decorated with gold and jewels, was made of several tons of{#blank#}2{#/blank#} (select) amber. It first{#blank#}3{#/blank#} (belong) to the King of Prussia and was given to Peter the Great as a gift. The Czar sent Frederick William a troop of his best soldiers{#blank#}4{#/blank#} return. Later it was moved to a palace outside St Petersburg{#blank#}5{#/blank#} Catherine Π spent her summers.

    During the Second World War, when Germany and Russia were at war, The Nazis stole the room{#blank#}6{#/blank#} (secret). In less than two days 100,000peices were put into twenty-seven{#blank#}7{#/blank#}(wood) boxes and put on a train for Künisberg. After that, what happened to the Amber Room{#blank#}8{#/blank#} (remain) a mystery and the room is now missing. Recently, the Russians and Germans have built a new Amber Room,{#blank#}9{#/blank#} looks like the old one,{#blank#}10{#/blank#} (celebrate) the 300^th birthday of the city of St Petersburg.

    According to the report, Tian'anmen Square will enter the 5G era（时代）. This also means the Tian'anmen Square {#blank#}1{#/blank#} (become) a "5G smart square" in the near future. 5G networks not only have better signals and {#blank#}2{#/blank#} (fast) download speeds, but also have a far-reaching impact on large tourist attractions. In addition to meeting the needs of high-speed internet access, 5G network can also support 4K HD video calling, so as to bring better experiences for the general public and tourists.