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Sandy Donovan
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دانلود کتاب Does It Really Take Seven Years to Digest Swallowed Gum?: And Other Questions You've Always Wanted to Ask (Is That a Fact?)
by Sandy Donovan|
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عنوان فارسی: آیا این واقعا هفت سال را به هضم آدامس بلعیده ؟: سوال و سوالات دیگر شما همیشه می خواستم به بپرسید (آیا این یک واقعیت؟) |
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جزییات کتاب
It takes seven years to digest swallowed gum. A penny placed on a train track can cause a train to derail. The average human consumes four spiders per year while sleeping. You may have heard some of these common sayings or beliefs before. But are they really true? Can they be proven using science? Let's investigate seventeen statements about familiar items and everyday events and find out which ones are right, which ones are wrong, and which ones still stump scientists! Find out whether eggs will really stand on their ends during the vernal equinox! Discover whether it's true that you can swing 360 degrees on a swing set! See if you can tell the difference between fact and fiction with Is That a Fact?
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