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45.The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Suns very center. It is here that is to be found the source of the energy that the Sun constantly pours out i
A: I'm hungry. B: So am I. A: Where should we go eat today? B: How about we go eat in the cafeteria? A: I never bought food from the cafeteria. B: You haven't? They have a lot of good stuff. A: What do they have? B: They sell everything. A: Well, I w
Enam: Katia, what are the environmental problems in your country? Katia: Well, I can think of three problems. One is water drought. The scarcity of water. Second, we have a lot of air pollution, and third a lot of deforestation. Enam: OK, so can you
Head-waiter: Good evening, sir. Henry: Good evening. Wed like a table for four, please. Head-waiter: Do you have a reservation, sir? Henry: No, Im afraid not. Can we sit over there? Theres a table free by the window. Head-waiter: Sorry, sir. That tab
Kenyan Farmers Going Green As scientists and political leaders around the world grapple with the issue of climate change, many farmers are looking at technologies that rely on renewable energy for their operations. Farmers in Kenya are now using two
A: Nice pen。 B: I got it over there. It's a steal。 假如在一部电视剧中听到这样两句对话,你会怎样理解呢?It's a steal是不是指笔是偷来的?B是贼吗? 非也,非也。 A说nice pen是因为看到B有一支漂亮的