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    Thousands of bats(蝙蝠)in the Northeast are dying, and no one knows why. Scientists are conducting investigations(开展调查) to find out the cause and stop the spread of deaths, which have been most heavily reported in New York, Vermont and Massachusetts.

    "Most bat researchers agree that this is the most serious threat to bats they have ever seen, " says Alan Hicks, a bat expert who works in the New York Department of Environmental Conservation.

    There are few clues about the cause of the deaths. Bats are easy to catch the contagious disease(传染病) because they hibernate(冬眠) together. In some caves, there are 300 bats per square foot. Environmental officials are asking people to stay out of bat caves to avoid spreading the mysterious(神秘的) sickness while they are working to find out what it is.

    Tablets are really useful devices, but their big screens always make them as a burden to carry around without a bag. Wouldn't it be great if there were a phone with the powers of a tablet that could be folded up and fit into the hand?

Now something like a tablet-shaped but foldable phone is about to become available. In February, South Korean electronics company Samsung and China's Huawei both showed foldable phones, The Galaxy Fold and Huawei Mate X respectively. Mobile phone use has entered the "foldable future", The Verge noted.

    The technology could change our lives in unusual ways. These devices, due to their foldable screens, give us the larger screens we want. At the same time, they still fit easily into the pocket. As USA Today noted, they're "the combination of a small tablet and smartphone, all in a single device".

    The technology could change other devices too. For example, we could make TVs that stick to walls like posters, or fold up easily to hide away in drawers. In crowded modern cities, they will help us to make full use of available space.

    In a keynote speech, Samsung's senior vice president of mobile product marketing, Justin Denison, called the foldable screen "the foundation for the smartphone of tomorrow". "It's a piece of white paper for us to paint something beautiful on together," he said.

    So is there nothing to stand in the way of the foldable future?

According to technology news website Android Authority, the necessary displays* were difficult to produce. At present, these foldable devices cost too much. For example, the price of Huawei Mate X is 17,500 RMB. That's a price that few people will be able to afford.

    But if the foldable device isn't going to change the world overnight, there is no doubt that it is coming.

    Patrick Moorhead, an industry expert told The Verge, "Few are debating if foldable mobile displays are the future of smartphones; the only question is when and by whom."

Hello, I'm Bob. I'm 12 years old. I am at school now. I want to say something about myself. 

Playing volleyball is my hobby. I like it very much. I always play volleyball with my friends after school. It's relaxing for me. I have five volleyballs. They are under my desk. And I like to watch volleyball games on TV. 

I have eggs, milk and some fruit for breakfast. For lunch, I have noodles and some salad(沙拉). For dinner, I like chicken and some vegetables. I don't eat ice cream. It's not healthy. My favourite food is fruit and vegetables. I think they are good for our health. 

I'm healthy because I like to play sports and eat healthy food. What about you? Can you tell me about your hobby and eating habits?