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耳朵在哪里

    青蛙妈妈让小青蛙到大自然中看一看,昆虫的耳朵都长在哪里。

    青蛙豆豆捉住一只蚊子,青蛙亮亮捧着一只小蝗虫,青蛙胖胖捉的是小蟋蟀,可它们都没有找到小昆虫的耳朵。

    “哈哈!哈哈!”小蚊子、小蝗虫、小蟋蟀忍不住齐声笑了起来:“你们怎么知道我们没有耳朵?”

    “我的触角就是耳朵!”小蚊子说。

    “我的耳朵长在肚子上!”小蝗虫拍拍自己的肚子说。

    “我的耳朵在这儿哩!”小蟋蟀举起前面的两条小腿说。

    小青蛙们听了,都不好意思起来。

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    Businesses are finding more uses for Virtual Reality (VR) as the technology develops. VR is no longer only for gaming or enjoyment. An American company called Blue Goji is using VR to improve one's health by making exercise more fun.

    Blue Goji has offices in Austin, the capital of Texas. The company showed its cardiovascular (心血管的) workout machine, called the Infinity treadmill (跑步机), at the recent South by Southwest festival, an event held every year in Austin.

    A person using the treadmill wears a virtual reality headset when exercising. Before starting, the user tightens a belt to prevent falls. Then, the user plays a VR game while running on the machine. The game can transport the user into the virtual world, where he or she can be racing against virtual people.

    Recently, Leonardo Mattiazzi tested the Infinity treadmill. Mattiazzi said he had a strong feeling to actually get running and do something that pushed his limits. He said the experience was more interesting than running inside the gym without actually going anywhere.

    Constam said the active use of virtual reality helps solve a common problem while wearing a VR headset. She noted that a lot of VR experiences cause motion sickness because people are in motion during the game, but not moving in real life. But when the user is moving on the treadmill and in the game, the chances of motion sickness are reduced.

    However, users who tested the treadmill while wearing the VR headset each had a different experience. Constam said there generally is a learning curve for VR. The first time users feel lost, but "the more you do it, the more you get used to it," she said. Mark Sackler was a first time user. He said he felt a little sick at one point during the game. But he thought the experience was surprisingly realistic.

    After carefully studying the users' experiences, Blue Goji plans to make the treadmill available to the public in 2019.