单词：secondary emission multiplier
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1. What is this? 2. What is that? 3. What's this? 4. What's that? 5. What are these? 6. What are those? 7. Where is Mr. King? 8. Where is Ms. Knight? 9. Where's Johnny? 10. When's the movie? 11. When's lunch? 12. How is the food? This is a table. Tha
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This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? We live in a nice neighborhood. Of the galaxy, that is. The sun is about halfway toward the outer edge of the Milky Way. But the sun may have migrated vast distances t
Scientific American(九)月
forest n.森林 forever ad.永远 forge v.打(铁等)；锻造；伪造 forget vt.遗忘；忘却，忘掉；编造(谎言) vi.忘记 forgive vt.原谅；免除(债务等) fork n.叉；分岔 form n.形式；类型；格式 v.形成 formal a.正式的，
大学英语四级词汇拼读版
Key Sentences（重点句子） 86．Madam．What can I do for you？ 夫人。我能为您做些什么？ 87．I'm looking for a man whose name is John． 我在寻找一位男士，他的名字叫约翰。 88．Could you tell me his room number，
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TEHRAN, Oct. 18 (Xinhua) -- Iranian（伊朗） leaders on Monday urged for the quick formation of the Iraqi government, saying that will serve the interests of the Iraqi people and enable them to enjoy stability, security, unity and prosperity（繁荣
英语新闻
Key Sentences（重点句子） 72．Is there any place in the hotel where we can amuse our－selves？ 旅馆里有娱乐场所吗？ 73．If you want to take a walk， you can go to the garden． 如果您想散步，可以去花园。 74．There i
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