Tins of cooling ointment (清凉油) have become a currency for Chinese traveling in Egypt.

    {#blank#}1{#/blank#} (visit)the complex of ancient temples at Karnak, Chinese tourist Mr. Ye lost his way among the stone churches and pillars.

    An Egyptian guide gave him directions. To show his {#blank#}2{#/blank#} (appreciate), Mr. Ye handed him a small red tin the size of a large coin. Inside {#blank#}3{#/blank#} (be) a cooling ointment that has the function of refreshing mind and preventing pain. Mr. Ye brought 50 tins with him on his six-day tour to hand out as tips.

    "Before I came to Egypt, the tourism agency told me {#blank#}4{#/blank#} (repeat) to bring cooling balm as a gift to make the trip {#blank#}5{#/blank#} (easy)," said Mr. Ye, a 25-year-old {#blank#}6{#/blank#} family sells Chinese medicine online. Egyptians, he said, are very nice to Chinese tourists, {#blank#}7{#/blank#} they love this little gift."

    Egyptians sometimes demand the balm by running a thumb across their foreheads. Li Xiaodong, an Egyptologist at China's Northeast Normal University, believes Chinese travelers initially brought cooling balm for {#blank#}8{#/blank#} (person) use because it's very hot in Egypt, then {#blank#}9{#/blank#} (discover) Egyptians liked it.

    Some Chinese tourists said giving gifts feels better than handing over money. "If you give essential balm, {#blank#}10{#/blank#} is more like you're giving it to friends," said one Chinese tourist.

    If you go out to the fields at night in spring or summer, you can hear frogs singing{#blank#}1{#/blank#}(joy) here and there. It seems as if they were performing a field symphony（交响乐）.

    The frog is a good and useful creature that benefits human beings. They can catch fast-moving insects. Each frog eats a large number of pests that are {#blank#}2{#/blank#}(harm) to crops. This little creature is regarded {#blank#}3{#/blank#}“the natural enemy of pests”.

    {#blank#}4{#/blank#} now frogs are getting fewer and fewer. This is{#blank#}5{#/blank#}they are killed and put on the table as a delicious dish by their chief enemy, human beings. It is a shameless and cruel act, isn't it? Another reason responsible for the rapid reduction of frogs is {#blank#}6{#/blank#}farmers use insecticides (杀虫剂) to kill pests and frogs get {#blank#}7{#/blank#}(kill)as a result of drinking poisoned water or eating poison-killed insects.

    Something must be done without delay {#blank#}8{#/blank#}(save) frogs. If we don't punish those {#blank#}9{#/blank#}sell and kill frogs to make money, then one day all of us {#blank#}10{#/blank#}(punish) by nature for failing to keep the balance of nature.

    In recent years, learning Chinese{#blank#}1{#/blank#}(become) popular among people around the world. Last month, I received an email from my friend Jack in Canada. He said he was enthusiastic about China, and asked me to find him some books which {#blank#}2{#/blank#} (intend) for Chinese beginners, I was pleased to do such a favor. So I went from one bookstore to another,{#blank#}3{#/blank#} (hope) to find something suitable for him. Finally I selected a set of Chinese textbooks among a variety of similar ones.

    Savanna, 11, is possibly one of our next great experts of the heart disease. After visiting her Sunday school teacher, who was about to perform a heart {#blank#}1{#/blank#} (operate) at the hospital, Savanna's curiosity led towards a deep appreciation of the heart and its importance to the human body.

    Encouraged by her parents to research further matters of the heart, Savanna learned that one in three of her peers (同龄人) {#blank#}2{#/blank#} (be) suffering from childhood fatness, {#blank#}3{#/blank#} can lead to heart diseases. She began making YouTube videos sharing with the world ways to have a better health and create a happy, healthy heart.

    In 2016, Happy Heart Advice launched its Happy Heart Challenges, {#blank#}4{#/blank#} (provide) over 300 hundred children and families {#blank#}5{#/blank#} education and free resources for healthy living. In June, she {#blank#}6{#/blank#} (invite) as an important speaker at the 9th Biennial Obesity Conference where she shared valuable information on how to form healthy eating {#blank#}7{#/blank#} (habit) and everyday lifestyles, and was honored by the American Heart Association for her work and effects in the health community at such {#blank#}8{#/blank#} early age.

    She's currently working on an app that will make it {#blank#}9{#/blank#}(easy) for moms and families to shop for “Happy Heart-approved Food”. She makes it her life's goal {#blank#}10{#/blank#} (make) sure kids have healthy hearts.

    A computer program has beaten a human player at the ancient Chinese board game Go（围棋）. It marked an important advance for the {#blank#}1{#/blank#} (develop) of artificial intelligence. The program, {#blank#}2{#/blank#} (call) Alpha Go, had taught itself how to win. It beat the European player in all five games of a match in October. The developers say {#blank#}3{#/blank#} (it) learning ability may someday let computers help solve real world problems. Those could include making medical diagnoses and {#blank#}4{#/blank#} (explore) scientific research.

    Previous computers have beaten humans in other games. But among classic games, Go has long been viewed as the most challenging game for artificial intelligence to master. Therefore, many people find it {#blank#}5{#/blank#}(accept) when AlphaGo won the human player.

    Go involves two players who take turns putting markers on a checkerboard-like grid (格子).  Players obtain the opponent's pieces {#blank#}6{#/blank#} surrounding them. The rules are simple, {#blank#}7{#/blank#} playing it is not. It's {#blank#}8{#/blank#} (probable) the most complex game ever created by humans.

    Martin Mueller, a computing science professor, {#blank#}9{#/blank#} (work) on Go programs for 30 years. He once said, "The new program is really a big step up from everything else that we've seen. It's a very {#blank#}10{#/blank#} (amaze) piece of work."