Questions 8 to 10 are based on the following news from the VOA. At tile end of the news item ,you will be given 10 seconds to answer each question. Now listen to the news When did Erik Weihenmeyer scale North America’ s highest peak

A．You can grow vegetables vertically.
B．You can raise plants in a confined area.
C．You can plant a wide variety of plants together.
D．You can make a lot of profit.