A patent is an official document{#blank#}1{#/blank#}(give)to an inventor by a government. This document {#blank#}2{#/blank#}(general) gives inventors the right to stop anyone else from copying, using or selling the invention without their permission.

    Inventions are the result of hard work. It may only take a moment of inspiration to think of a good idea but it takes a lot of research and experimentation to turn it into a(n){#blank#}3{#/blank#} (use)and working invention. So, inventors deserve a reward for the amount of time they spend {#blank#}4{#/blank#}(develop)their ideas. They also need the {#blank#}5{#/blank#}(secure) of knowing that if they share the invention with {#blank#}6{#/blank#}rest of the world, nobody will steal it, use it or copy it without their permission.

    Patents also benefit the society {#blank#}7{#/blank#}return for patent protection. Inventors agree{#blank#}8{#/blank#}(show)all the technical information about their invention. This information is available to everyone and has enough details {#blank#}9{#/blank#}can be used by people with basic knowledge to produce the invention. In this way, patents help to spread new knowledge, which can in turn help people find {#blank#}10{#/blank#}(solve)to different problems or to make further advances in science and technology.

    Crossword puzzles and exercise are just a few of the habits that improve memory best. But to {#blank#}1{#/blank#}(true) give your brain a push, you might want to take a simple tip to heart-and it's nothing you learned in school.

    So far, researchers from Waterloo University in Canada {#blank#}2{#/blank#}(discover) what may be the easiest way to improve your memory ever. Their research, recently {#blank#}3{#/blank#}( publish) in the journal Memory, suggests that reading out loud to yourself can increase your recall skills {#blank#}4{#/blank#}up to 15%.

    In the study, scientists asked 95 participants to test four {#blank#}5{#/blank#}(method): reading, silently, hearing someone else read, reading aloud and listening to a recording of oneself reading. Their result? The people{#blank#}6{#/blank#}read the information out loud showed the best retention(保持)rates—about 15%{#blank#}7{#/blank#}(high) in learning speed, in fact. You may want to add these brain-boosting foods that can improve memory to your diet, too.

    “Read{#blank#}8{#/blank#} needs to be remember out loud, and you'll remember it better. Yes, it's shat simple!” psychologist and study co-author Colin Macleod said.

    So next time when you're preparing for a big exam, spend some time{#blank#}9{#/blank#} (read) loud. Trust us. It might make you{#blank#}10{#/blank#}genius.

Dear Dad,

    On this date of your 50th birthday, Mom gave me the letter you wrote me when I was born 18 years ago. In your letter, you {#blank#}1{#/blank#}(wish) me to be strong-minded and successful. You were looking forward to {#blank#}2{#/blank#}(see) me fight for my future bravely and do well for {#blank#}3{#/blank#} and others.

    After reading this letter, I feel quite {#blank#}4{#/blank#}(shock) at your{#blank#}5{#/blank#}(expect) on me. I also feel shamed {#blank#}6{#/blank#}not having performed well to meet your demand. I still remember when I was in primary school, I failed to apply myself to studying. I was addicted to computer games. As a consequence, I soon became the last one in my class. You didn't abuse me at all. {#blank#}7{#/blank#}the contrary, you taught me that studying was the most important object at the moment and encouraged me to study hard. Only {#blank#}8{#/blank#}I read your letter did I realize that I behaved so badly at that time and you were so sad to see I didn't do well for myself.

    I can't help expressing my gratitude and sending my best wishes to you. Wish you{#blank#}9{#/blank#}(health) and happy. I promise that I will spare no effort to satisfy your demand of being {#blank#}10{#/blank#}brave and successful person.

    In Canada and the United States, people enjoy entertaining(请客) at home. They often invite friends over{#blank#}1{#/blank#}a meal, a party, or just for coffee and conversation.

    Here are the {#blank#}2{#/blank#} (kind) of things people say when they invite someone to their home:

    "Would you like to come over for dinner Saturday night?" "Hey, we {#blank#}3{#/blank#}(have) a party on Friday. Can you come?" {#blank#}4{#/blank#}(reply) to an invitation, either say thank you and accept, or say you're sorry and give an excuse: "Thanks, I'd love to. What time would you like me to come?" {#blank#}5{#/blank#} "Oh, sorry. I've tickets for a movie."

    Sometimes, {#blank#}6{#/blank#}, people use expressions that sound like invitations but which are not real invitations. For example: "Please come over for a drink sometime." "Why not get together for {#blank#}7{#/blank#} party sometime?" "Why don't you come over and see us sometime soon?"

    They are really just polite ways of {#blank#}8{#/blank#} (end) a conversation. They are not real invitations because they don't mention a specific(确定的) time or date. They just show that the person is trying to be {#blank#}9{#/blank#} (friend). To reply to expressions like these, people just say "Sure, that would be great!" or "OK. Yes, thanks."

    So next time when you hear {#blank#}10{#/blank#} sounds like an invitation, listen carefully. Is it a real invitation or is the person just being friendly?

    Everyone has dreams, but not all dreams can be realized. People give up their dreams for this or that reason. Those {#blank#}1{#/blank#} dreams become true have one thing in common, that is, they insist on {#blank#}2{#/blank#} (work) for their dreams.

    Marie Curie, a famous scientist, has set {#blank#}3{#/blank#} good example. In 1898, Marie {#blank#}4{#/blank#} (find) a new element (元素) in the pitchblende (沥青铀矿). {#blank#}5{#/blank#} (prove) her discovery, she had to show it to the world, which also became her dream. After using tons of pitchblende, Marie and her husband {#blank#}6{#/blank#} (final) saw the blue light of radium (镭). There are many other examples. Athletes who gain gold medals and students who enter key universities after {#blank#}7{#/blank#} (year) of hard work, are all dream-holders.

    The path to dreams may not be smooth and the progress may be {#blank#}8{#/blank#}(pain). But hold on to your dreams, no matter {#blank#}9{#/blank#} big or small they are. Hold on to the end, and you will find there is nothing {#blank#}10{#/blank#} (happy) than your dreams coming true.