At the midnight, thunder was crashing and the rain was pouring. Suddenly my father rushed into my room. “Adam! Adam! Get up! We're flooding!” he shouted and shook me by the shoulders. That woke me up! I ran downstairs to the basement (地下室). It was like a swimming pool. My mother and I immediately started to pick up things and take them upstairs. I had no shoes on, so my feet felt quite cold.

Things got worse every minute. Within the next hour, we had moved everything that we could to the first floor. The computer, big-screen television and heavy boxes filled with our most valuable things were taken to safety. However, our piano, sofa, washing machine and water heater were all still down there — being destroyed. There was nothing we could do.

That was the hardest part. Knowing that your home is being destroyed is bad enough, but realizing that you can't do anything to stop it feels even worse. Water had come in our front door. Rescue boats were floating in our streets. Mother told me to pack an overnight（通宵, 前夜） bag of clothes and valuables and get ready to leave.

When it was finally safe to walk outside, all the people in the neighborhood gathered at the street corner. People became friends, and friends became like family. People comforted each other. We learnt later that the National Weather Service had declared (宣布) the storm a flash flood.

I really have learnt something from this flood, I've learnt what destruction is. I have learnt what safety means. I know in the future, when I watch people's lives affected (影响) by natural disasters, I can understand them. I will show my great pity on them and I will do what I can to help them.

    "Look here, Watson," Holmes said after we finished lunch. "Please sit down. I want to talk to you. I don't know what to do, and your advice is important to me. You smoke your cigar (雪茄烟) while I explain."

    "Please continue," I said, as I lit my cigar.

    "Now there're a few important points in young James' story. One, his father cries Coo-ee before he sees him. Two, he talks about a rat (老鼠). I think young James is telling the truth (真相)."

    "So why did Mr. McCarthy shout Coo-ee then?"

    "Well, he was not shouting Coo-ee to his son. It was by chance that James heard. The Coo-ee was to call the person he was meeting. But Coo-ee is an Australian cry, Australians usually say it when they meet to catch attention. Perhaps Mr. McCarthy was meeting someone from Australia."

    "I see. But why did he talk about a rat, then?" I asked.

Holmes took a piece of paper from his pocket and put it on the table.

    "This is a map of Australia," he said. He put his hand over part of the map. "Now, Watson, what can you read there?" he asked me.

    "ARAT," I read.

    "And now?" Holmes moved his hand.

    "BALLARAT," I read.

    "Yes. That was the word the dead man said. It's a place called Ballarat. His son only heard the 'rat' part of the word. Old Mr. McCarthy was trying to say where his murderer was from, the town of Ballarat. The grey cloak is point No. 3. If James is telling the truth, there was a grey cloak (斗篷). So now we have an Australian from Ballarat with a grey cloak."

    "Great!" I replied.

    "And it's someone who lives nearby, as the Boscombe Pool isn't open to the public. Only people from the farm nearby or the Turner house can go there," said Holmes.

    "That's wonderful, Holmes!" I exclaimed.

There is nothing like chocolate. Just thinking about it can make your mouth water. September 13 is the International Chocolate Day, which gives us a good reason to celebrate the world's most popular sweet. 

Chocolate comes from a civilization（文明）called the Maya. They had a special food called cocoa. The word cocoa means" gift from God". About five hundred years ago, the Europeans found the Mayans and used cocoa to make chocolate. 

For centuries, only the rich could enjoy chocolate, and normal people could not get hold of it. All this changed when European companies started to produce chocolate bars in the 19th century. Chocolate comes in different colors and sizes. People often eat white, dark and milk chocolate. The biggest chocolate bar was ever made in Italy in 2011 and weighed almost 6 tons! That's as big as an elephant. 

There are also different shapes of chocolate and people often take them as holiday gifts. Chocolate bunnies（小兔子）and eggs are popular on Easter, chocolate coins are common on Christmas Day, and chocolate hearts are great gifts for Valentine's Day. At certain parties and wedding ceremonies(结婚典礼), chocolate fountains always surprise guests. 

Lots of people say chocolate is bad for your health. Not necessarily so! Scientists now say it is good for people's heart and can make the body release chemicals that actually make us happy and make us feel better. But don't eat too much of it. 

Yushu, Qinghai Province, is one of the living places for black-necked cranes(鹤). Cranes have very long necks and their necks are black. That's why they are called black-necked cranes. Cranes travel very far every year. Cranes spend about 5 months in Qinghai-Tibet Plateau (高原).

Starting in March, black-necked cranes will fly back to Qinghai. There are lakes and marshes (沼泽), perfect for them to live in. Year after year, black-necked cranes may fly to other places, but they always come back to the plateau areas.

Their life is difficult, because they don't have enough food and the weather changes very often. Black-necked cranes have a very small population. They are under first-class state protection in China. Local people treat the birds with love. In local tradition, they are a symbol of good luck, so they are very popular.

It is not hard to get along with these wild animals. Just give them a little more space. They can have a bigger chance to increase quickly. People in Qinghai are working very hard to make sure the black-necked cranes live better.

 Welcome to life in the future! You get up in the morning and look into the mirror. You' ve recently had a new anti-aging(抗衰老) treatment, so you look like a 30-year-old. And many people your age could live to be 120 now, so--at 60--you' re not old at all.

 Science has also found amazing ways to keep people healthy. Nanotechnology(纳米技术) can help cure(治愈) many illnesses, including cancer(癌症). And if any part of your body is unhealthy, you can"grow" a new one in a laboratory(实验室).

As you get dressed, you say to your shirt, "Turn red." It becomes red. In 2045, "smart" clothes contain nanoparticles(纳米粒子) that carry electricity. So you can program clothes to change colors or patterns

 On the way to the kitchen, you want to call a friend. Your cell phone is by the window because it gets its energy from the sun. But you don't need to pick up the phone. You can just touch your jacket sleeve(袖子) to make the call

 It's breakfast time. You reach for the milk, but a voice says, "Don't drink that!" Your fridge knows the milk is old and tells the supermarket to replace it. Ten minutes later, it's delivered by a drone(无人机).

 As you leave for work, the lights turn off by themselves. Your home goes into"sleep" mode to save energy. In 2045, cars drive themselves, so you just tell your driverless car where you want to go.

 Will all this come true? Perhaps the future is much closer than we think.