On May 18, it was announced that China had achieved success in drilling fire ice, a frozen {#blank#}1{#/blank#}(mix) of water and natural gas, from the South China Sea. {#blank#}2{#/blank#}(official) known as methane hydrates(甲烷水合物), fire ice produces a high amount of energy when {#blank#}3{#/blank#}(burn) and its chemical reaction produces nothing but dioxide and water.

    Fire ice, both clean and energy-intensive, {#blank#}4{#/blank#}(consider) the fuel of the future. Many countries, including the United States and Japan, have long been conducting research on fire ice, but extracting（提取）it from the bottom of the sea has been a common problem {#blank#}5{#/blank#}(trouble) all of them. But, the Chinese team succeeded in drilling fire ice for nearly eight successive days, {#blank#}6{#/blank#}is a big breakthrough.

    However, it is too early {#blank#}7{#/blank#}(say) a new energy source has been found. The world's total fire ice reserve is about 21,000 trillion cubic meters, which, if extracted, could meet the world's energy need

    {#blank#}8{#/blank#}1,000 years. But the successful test drilling of fire ice does not mean it can be extracted for {#blank#}9{#/blank#}(industry) use. China has to solve many problems before it can use fire ice as a source of energy.

    It's thought that only by 2025 at{#blank#}10{#/blank#} earliest might people be able to look at realistic commercial options.

    The Chang'e 4 spacecraft landed on the so-called dark side of the moon at 10:26 am on Thursday, brought the country{#blank#}1{#/blank#}(close)to its goal of becoming a space power. Chang'e 4 sent a picture{#blank#}2{#/blank#}(take) at 11:40 am back to Earth. It shows that the moon's far side is not{#blank#}3{#/blank#}(absolute) dark. But it is often called the dark side because it faces away from Earth and little{#blank#}4{#/blank#}(know) about it. In fact, the far side of the moon is a rather quiet place that is free from disturbance from radio{#blank#}5{#/blank#}(signal) from the Earth.

    Hou Xiyun is a professor at Nanjing University's school of astronomy and space science, {#blank#}6{#/blank#}told the Associated Press, "{#blank#}7{#/blank#}the whole, China's space technology still lags behind the West, with the landing on the far side of the moon, we have raced to the front."

    He added, "The landing is{#blank#}8{#/blank#}example of China's growing desire{#blank#}9{#/blank#}(strengthen) its position as an international power. China plans to explore Mars, Jupiter and asteroids in the future."

    There's no doubt that our nation will go farther and farther.

    It's hoped {#blank#}10{#/blank#} our space dream to make China stronger will come true soon.

To Be Joyful, To Be Young

    What really works to make sustainable changes in diet and lifestyle? It's probably not what you think. In the past 30 years of conducting clinical research, I {#blank#}1{#/blank#} (learn) that real keys are pleasure, joy and freedom. Why? Because life is to be enjoyed. There's no point {#blank#}2{#/blank#} (abandon) something you enjoy unless you get something back that's even better, and quickly. When people eat more healthfully, quit smoking, and manage stress better, they find they feel so much better, so quickly. {#blank#}3{#/blank#} you exercise and eat right, your brain{#blank#}4{#/blank#} (receive) more blood flow and oxygen, so you become smarter, have more energy, and need less sleep. Two studies showed just walking for three hours per week for only three months caused so many neurons {#blank#}5{#/blank#} (grow) that it actually increased {#blank#}6{#/blank#} size of people's brains! Your face receives more blood flow, so your skin glows more and wrinkles less. You look younger and {#blank#}7{#/blank#} attractive. In contrast, an {#blank#}8{#/blank#} (health) die and smoking speeds up aging because nicotine contributes {#blank#}9{#/blank#} your blood vessel becoming narrower, {#blank#}10{#/blank#}decreases blood flow to your face and makes it wrinkle prematurely.

    For the first time in 94 years, the Palace Museum has extended its opening hours, allowing the public to celebrate the Lantern Festival at night in the ancient palace.

    About 3, 000 lucky visitors received free tickets from the government, among {#blank#}1{#/blank#} was Zhang Zhifu, a 77-year-old public security volunteer. It's a mark of gratitude for her volunteer work. "It is {#blank#}2{#/blank#} (true) an honor to be granted this special privilege," Zhang said.

    To guarantee the {#blank#}3{#/blank#} (safe) of the palace, festival organizers {#blank#}4{#/blank#} (plan) this year's Lantern Festival event used LED lights rather than traditional paper lanterns and red candles. It's a fascinating event for visitors to absorb {#blank#}5{#/blank#} (they) in the festive atmosphere in the museum. Discussion of the Palace Museum's new look lit up social media following Tuesday's display.

    Since he became director of the Palace Museum, Shan Jixiang {#blank#}6{#/blank#} (bring) many changes to the world's {#blank#}7{#/blank#} (large) royal complex (建筑群). Once in a speech the 64-year-old director shared his idea about how to make traditional {#blank#}8{#/blank#} (treasure) come alive again. "{#blank#}9{#/blank#} matters to a museum is not how many visitors they have, but how close they are {#blank#}10{#/blank#} people's daily lives," he said.