Do you like travelling? Staying healthy while{#blank#}1{#/blank#}（travel） can help to ensure your trip is a happy and enjoyable one．If you are travelling abroad, here are the{#blank#}2{#/blank#}(tip) you need to make your trip much{#blank#}3{#/blank#}（easy）.

    Make sure you have got signed passport and visas. Also, before you go, fill in the emergency{#blank#}4{#/blank#} (inform) page of your passport! Make two copies of your passport identification age. This will help a lot if your passport {#blank#}5{#/blank#}（steal）. Leave one copy at home with friends or relatives. Carry the other with you in a separate place from your passport．Read the Public Announcements or Travel Warnings for the countries you plan to visit. Get yourself familiar with local laws and customs of the countries to{#blank#}6{#/blank#}you are travelling. Leave a copy of your itinerary（旅行日程） with family or friends at home so that you can be contacted in case{#blank#}7{#/blank#}an emergency. Do not accept packages from strangers．Do not carry too much money or unnecessary credit cards.{#blank#}8{#/blank#}we make enough preparations, we will{#blank#}9{#/blank#}(certain) succeed．Have{#blank#}10{#/blank#}good time!

    There's no such thing as living alone. Never mind if you're {#blank#}1{#/blank#} only person in your house and have no dog, no cat, not even fish. You still have got several billion {#blank#}2{#/blank#} (roommate) — and so do we all. Some of them are harmless, some are {#blank#}3{#/blank#} (actual) helpful and some could even kill you. They are, of course, bacteria, fungi(菌类) and viruses, and like it or not, they're on you, around you, and deeply within you. The fact that bacteria life is everywhere is not{#blank#}4{#/blank#} (surprise). It's something you {#blank#}5{#/blank#} (learn) from your childhood when your mother told you not to drink water from someone else's glass. There are lots of bacteria {#blank#}6{#/blank#} are living in your tea kettle. There are bacteria {#blank#}7{#/blank#} (sleep) with you on your bed. Scientists are beginning {#blank#}8{#/blank#} (realize) the richness of the microbiome (微生物群系) — which is as complex as the ones {#blank#}9{#/blank#} (find) in oceans, rainforests, deserts and woodlands. Your house has a microbiome and {#blank#}10{#/blank#} do you.

    That Beijing, together with Zhangjiakou, succeeded in getting the chance to host the 2022 Winter Olympic Games, speeds up the development of Zhangjiakou City. Word came{#blank#}1{#/blank#}the Beijing-Zhangjiakou high-speed railway,{#blank#}2{#/blank#}(locate) in North China, is currently under construction, and{#blank#}3{#/blank#}(expect) to be completed by 2020 in preparation for the cities to host the 2022 Winter Olympics. Starting from Beijing North Railway Station, heading west through the Great Wall three times in the capital's territory, the project is a big challenge,{#blank#}4{#/blank#}designers say the explosions needed to dig the tunnels will not have an impact on the structure. The line has a{#blank#}5{#/blank#}(long) of 174 km as a double tracked passenger dedicated line, with ten stations situated along its route. Having a{#blank#}6{#/blank#}totally) investment of 31.17 billion Yuan ($5 billion), the trip between the two cities will only take 40 minutes, with the train{#blank#}7{#/blank#}(travel) at an average of 250 km/h. According to the plan, the high-speed railway will build two branch lines—one is to Yanqing Station and the other{#blank#}8{#/blank#}Taizicheng of Chongli,{#blank#}9{#/blank#}the Olympic village lies. The full railway, which includes 70-kilometer section through Beijing, will be completed in four and{#blank#}10{#/blank#}half years.

    A few years ago, after a long morning of sightseeing in New York, my children and I took a rest on a park bench in Central Park.

    "Look!" my son said, {#blank#}1{#/blank#} (point) to a nearby rubbish bin. That's when we saw our first raccoon (浣熊). Quite at home in the big city, he paid us no attention, concentrating only on finding a {#blank#}2{#/blank#} (taste) lunch. He sorted through a few options before coming out with a wrapped sandwich {#blank#}3{#/blank#} (hold) between his paws.

    {#blank#}4{#/blank#} (surprise), rather than run away, he jumped down and walked casually to a spot on the path, not a metre from {#blank#}5{#/blank#} we sat. The children were spellbound, the raccoon providing better {#blank#}6{#/blank#} (entertain) than any museum. He glanced at us, perhaps checking to see {#blank#}7{#/blank#} we were about to steal his lunch.

    {#blank#}8{#/blank#} his fingers, he peeled back the layers of plastic wrap until the half-eaten sandwich {#blank#}9{#/blank#} (uncover).

    Then he surprised us all. Instead of starting his food, he {#blank#}10{#/blank#} (turn) to a nearby pool of water and dipped his paws in. With a casual air, he rubbed his paws together underwater for a moment, brushed his fur, then started gracefully picking at his meal.