In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow. Questions 21 to 23 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now, listen to the news. What is the report mainly about
A．President Obama’s economic stimulus is not effective. B．President Obama’s economic stimulus is effective. C．President Obama’s economic stimulus should be extended. D．President Obama’s economic plan needs more money.