Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, October 8. Problem sets will not be accepted late Solutions will be posted on the web

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, october22 Problem sets will not be accepted late Solutions will be posted on the web

Please print out this problem set and record your answers on the printed copy. answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, November 26. Problem sets will not be accepted late Solutions will be posted on the web November 27

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, October I Problem sets will not be accepted late Solutions will be posted on the web October 2

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, September 17. Problem sets will not be accepted late. Solutions will be posted on the web

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box by 4: 10 Wednesday, September10. Problem sets will not be accepted late. Solutions will be posted on the web

Problem 1. Suppose that you flip three fair mutually independent coins. Define the fol- lowing events: Let be the event that the first coin is heads. · Let be the event that the second coin is heads. · Let be the event that the third coin is heads

2004年6月全国大学英语四级考试真题和答案 Part I Listening Comprehension(20 minutes) Section a Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked

2003年1月全国大学英语四级考试真题和答案 Part I Listening Comprehension(20 minutes) Section a Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked

1. abide by(=be faithful to;obey)忠于;遵守。 2. be absent from缺席,不在 3. absence or mind(=being absent-minded-)心不在焉 4. absorb(=take up the attention of)吸…的注意力(被动语态):be