The computer began as a calculating machine in France in 1642. It could make difficult sums much {#blank#}1{#/blank#}  (simple). In 1936 Alan Turing wrote a book about how the computer could be made to work as a "universal machine"   {#blank#}2{#/blank#} (solve) any difficult mathematical problem.

    At{#blank#}3{#/blank#} beginning, the computer was {#blank#}4{#/blank#}large as a room. This really worried the designers. As time   {#blank#}5{#/blank#} (go) by, it became smaller and smaller. With artificial {#blank#}6{#/blank#} (intelligent), it is getting cleverer and cleverer, quicker and quicker.

    In the early 1960s, computers could{#blank#}7{#/blank#}connect) by a network,{#blank#}8{#/blank#} enabled their users to share information {#blank#}9{#/blank#} others. Since the 1970s, computers have had many new{#blank#}10{#/blank#}(application) and become very important in communication, finance, trade and even been put into space rockets and sent to explore the Moon and Mars.

    When people {#blank#}1{#/blank#} (face) with health or nutrition questions, it is {#blank#}2{#/blank#} (increasing) common to go online and diagnose themselves. But the Internet is full of conflicting health warnings with no regulation to get rid of the wrong advice, some of which {#blank#}3{#/blank#} (be) extremely dangerous! Also, search engines rank results by {#blank#}4{#/blank#} (popular) rather than accuracy, so solid facts can be tricky to find. It is worth {#blank#}5{#/blank#} (check) if the writer of an online piece is properly qualified as an expert. Anyone can call {#blank#}6{#/blank#} (they) a "diet expert", "nutritionist" and even a "doctor" — given it could refer to qualifications like a PhD. But remember, only officially {#blank#}7{#/blank#} (recognize) practicing doctors as well as dietitians have degrees in giving medical {#blank#}8{#/blank#} (suggest). So if you are unsure and still wondering {#blank#}9{#/blank#} the chocolate diet really does work or not, then it pays to make {#blank#}10{#/blank#} appointment with your dietician or doctor. The truth is out there, and you just need to look in the right place!

    Generally speaking, joy {#blank#}1{#/blank#} (express) by laughter. But as it turns out, it reveals a lot more than the fact {#blank#}2{#/blank#} you are happy. It enables listeners, even those who cannot observe you, {#blank#}3{#/blank#} (realize) if you are having a good time with a close friend or laughing {#blank#}4{#/blank#} (polite) with a complete stranger.

    At least, this is the conclusion {#blank#}5{#/blank#} (reach) by a team of scientists led by Greg Bryant, {#blank#}6{#/blank#} assistant professor of Communication Studies at the University of California, Los Angeles. The researchers began by {#blank#}7{#/blank#}(request) volunteers from across the world to send them audio clips(音频剪辑) of people laughing. The 48 tapes they received {#blank#}8{#/blank#} (range) from recent recordings of laughter between two college friends {#blank#}9{#/blank#} ones from conversations made ten years ago. The clips also had all possible {#blank#}10{#/blank#} (combine)--communications between friends, strangers, all-male groups, all-female groups, etc.

    Bryan says that the results of this cross-cultural examination show that people all over the world know laughter in similar ways.

    Have you ever wondered{#blank#}1{#/blank#}children always seem to have bags of energy and never run out of steam? Researchers have discovered that children have the levels of recovery of endurance athletes. In fact, scientists say children's muscles recover from "high-intensity exercise" a lot{#blank#}2{#/blank#}(quick) than athletes. A study looked at the performance levels of children when they were cycling, and compared their fitness to {#blank#}3{#/blank#}of athletes. Researcher Dr Sebastien Ratel suggested they {#blank#}4{#/blank#} (find) the children used more of their aerobic metabolism and were therefore less tired during the high-intensity physical activities. The children also recovered very quickly-even faster than the well-trained adult endurance athletes.

    The researchers hope that{#blank#}5{#/blank#}(they) findings will help scientists have a better{#blank#}6{#/blank#}(understand) how the human body changes with age. It could lead to advances in the fight {#blank#}7{#/blank#} diabetes and other diseases. Dr Ratel said the research was{#blank#}8{#/blank#}(particular) important as more children were become less active. He warned: "With the diseases related to physical inactivity{#blank#}9{#/blank#}(rise), know the changes with growth that might contribute to the risk of disease. "{#blank#}10{#/blank#}is helpful for children to maintain their fitness as they grow up and play as much as they could so they remain healthy as adults.

Logan Wells, a high school student in Massachusetts, developed an app that makes it easier for people to care for loved ones with dementia(痴呆).

Logan was 15 when his grandmother was diagnosed with dementia. "You can't imagine{#blank#}1{#/blank#} terrible its effect was, not only on my grandmother, but on my parents and other family members," Logan said. "It became really hard to stay on{#blank#}2{#/blank#}same page, because we had to have multiple group chats."

So, he came up{#blank#}3{#/blank#}the idea for CareZare, which enables caregivers to work as a team through a communication website. Logan did the coding{#blank#}4{#/blank#} (entire) by himself while his father assisted him in creating the original design and undertook the marketing.

The free app allows users{#blank#}5{#/blank#} (create) a profile(档案)centered around the individual with dementia and invite other people to join and receive{#blank#}6{#/blank#} (message). With the app, you can schedule events, confirm completed tasks, and even add a "heads up" such as the current mood of the patient or poor weather conditions.

       The app is currently being used by over 600 families and they enjoy{#blank#}7{#/blank#} (share) their opinions about it.{#blank#}8{#/blank#}(please) with that, Logan is hoping it will grow.

       "So far our users{#blank#}9{#/blank#}(be) great about giving us feedback so we can tailor(定做)the app to their needs," he said. "Caregiving is such an important issue for them because it's sovl {#blank#}10{#/blank#}(person) for them, just as it is for me."