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vanhnhamhiem2000
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Hợp chất nào sau đây thuộc loại đipeptit? A. H2N-CH2CH2-CONH-CH2CH2COOH B. H2N-CH2CH2-CONH-CH2COOH C. H2N-CH2CONH-CH2CONH-CH2COOH D. H2N-CH2-CONH-CH(CH3)-COOH
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XI. Đọc đoạn văn rồi trả lời câu hỏi bằng cách chọn đáp án A, B, C hoặc D Richard Ryan is stuck in traffic. There must be an accident somewhere up ahead because he’s been sitting in the same spot for the last few minutes. The cars aren't moving at all. It looks like it's going to be another slow commute. Even though he left his house early to beat the traffic, if the cars don't start to move soon, Richard will be late for a very important meeting. He has to meet with some lawyers who are advising his company on a construction project. Richard is the president of a big company. If he's late, he won't get in trouble, but he hates to be late for anything. Sergey is stuck in the same traffic jam, and he's headed to the same meeting that Richard is going to. He's worried about being late, so he gets out his cell phone and calls one of his coworkers to tell her that traffic is bad. Sergey doesn't know that his boss, Richard, is in the same traffic jam. If he knew that, he wouldn't be so tense. Both Richard and Sergey live in California where traffic congestion and delays are common problems. Richard is thinking about moving his business to a new location that’s closer to the downtown business district where most of his employees live. If he did that, Sergey could ride his bike to work and forget about getting stuck in a traffic jam. 1. What is most likely the reason why Richard Ryan is stuck in traffic? A. His car is broken down B. He doesn’t know the traffic rule C. He got up late D. There must be an accident up abroad 2. Which position of Richard Ryan in his company? A. Richard is the president of a company B. He is a secretary C. He is a sale manager D. Richard is a worker 3. Where does Richard live? A. He lives in New York city B. He lives in California C. He lives in Washington D.C. D. He lives in Boston 4. Why does Sergey call his co-workers? A. To ask about the time of the meeting B. To ask Richard’s phone number C. To tell her how bad traffic is D. To tell her that he will come back home. 5. What could Sergey do if Richard moved his business to a new location that’s closer to where most of his employees live? A. He could run to work B. He could be late again. C. He could drive his car to work D. He could forget about getting stuck in a traffic

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