Questions 7 and 8 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions.
Now listen to the news. Why is the Iran’s Supreme Leader urging his countrymen to work harder

A．Because Iran suffered from more severe economic sanctions from the U.S. and U.N.
B．Because the Iranian government was planning to stop selling oil to the U.S.
C．Because the Iranian government already stopped selling oil in euros.
D．Because the European Union already approved of a new package of sanctions.