Exercise 1. Questions 1 to 2 will be based on the following news item.

Part V Listening Comprehension for CET 4 Section A News Reports News1 ——Artificial Intelligence Created a New Sport Questions 1 and 2 are based on the news report you have just heard. Question 1 Questions1 to 4 are based on the conversation you have just heard（） Answer the following two questions. 1. What are the functions of signal words? 2. How many types of signal words are commonly used in writing? What is the function of the following two sentences: （1） An experiment was designed to collect data for the study （2） The questions used in our studies are adapted from the studies by Richards （2004）（ By joining the program, the applicants wil________. INTERVIEW 1　　Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. 　　Now listen to the interview. Juliet became a taxi driver because 根据题目要求完成下列任务。用中文作答。以下是两位老师为学生布置的作业：Teacher 1Step 4 : Homework1. Write new words and phrases on the notebook.2. Finish exercise 3 on Page 21. （Text book）3. Finish exercises on Page 20-24. （Exercise boo 表达式 [1, 2] * 2 的值为_________: 1,2,1,2|[1, 2, 1, 2]|[1, 2], [1, 2]|[[1, 2], [1, 2]] According to the last paragraph, the government wil______. CONVERSION 1　　Questions1 to 5 are based on a conversation. At the end of the conversation you will be given 10 seconds to answer each of the following five questions. 　　Now listen to the conversation. Gary prefers The Timesto The Heraldand City Journalbecause 2, 2，8， -1, -2, 5， 1, 1, 2， -1, 1，( )。 1/（1+2）+1/（1+2+3）+1/（1+2+3+4）+……+1/（1+2+3+……+50）=（） 2，2，8，-1，-2，5，1，1，2，-1，1，()。   （1+1/2+1/3）×（1/2+1/3+1/4）-（1+1/2+1/3+1/4）×（1/2+1/3）＝（） (1-1/2²)(1-1/3²)(1-1/4²)...(1-1/2009²)(1-1/2010²)=()。   下列6组量子数均可表示一个2p电子：（1）2，1，0，＋1/2（2）2，1，0，－1/2（3）2，1，1，＋1/2（4）2，1，1，－1/2（5）2，1，－1，＋1/2（6）2，1，－1，－1/2。氮原子中的各P电子，其量子数组合是（　　）。 On January 1, Orange Computers issued employee stock options for 400,000 shares. Options on 200,000 shares have an exercise price of $18, and options on the other 200,000 shares have an exercise price 设α1=(1，2，-1，-2)T，α2=(1，1，-1，-1)T，α3=(-1，0，1，-1)T，β1=(2，5，-1，-5)T，β2=(2，5，1，-5)T，W1=L(α1，α2，α3)，W2=L(β1，β2)(W1，W2分别表示 由α1，α2，α3和β1，β2生成的线性空间)。 (1)求W1∩W2的维度；(2)求W1∩W2的一个基。 (1-1/2²)(1-1/3²)(1-1/4²)...(1-1/2009²)(1-1/2010²)=()。 下列各组量子数组合，合理的一组是（ ）: 1，2，0，+1/2 2，1，-1，-1/2 2，1，0，0 3，1，2，+1/2