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The next morning after breakfast, everyone rushed over to check the Chore List that Mr. Morgan posted on the pantry door. Weve got kitchen duty, Jessie said to Benny. Sarah and Ive got something called . . . mulching, Violet said. Henry and I will be
34 The Mystery Horse
The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松（松树）制成, 在液体的石蜡
英国学生科学读本
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
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This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
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Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
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It was a half-holiday and William was in his bedroom making careful preparations for meeting his fellow outlaws, as they called themselves, in the afternoon. He and the other outlaws would always meet up during half-holidays, to go on adventures and
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