题目

1. In which section will the text appear in the newspaper? A. News reports.                                          B. Business world. C. Different voices.                      D. Life events. 2. By attending which of the events will it be likely for you to practise your English? A. Amateur Performance Night and Shanghai Book Crossing. B. Amateur Performance Night and Good heart sale. C. Good Heart Sale and Shanghai Book Crossing. D. Good Heart Sale and Free Coffee for All. 3. What can we infer from the passage? A. Tickets to all 已知函数， （1）若是常数，问当满足什么条件时，函数有最大值，并求出取最大值时的值； （2）是否存在实数对同时满足条件：（甲）取最大值时的值与取最小值的值相同，（乙）？ （3）把满足条件（甲）的实数对的集合记作A，设，求使的的取值范围.