Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage.
The driest continents is______.

A．Sales are down, but only by 5 % more than for the group as a whole.
B．Our budget for sales has been kept static.
C．The products are getting old—we need a new generation.
D．This is a global problem in our market.

A．Environmental protection.
B．Trash landfill.
C．The issue of biodegradable.
D．Banning plastics bags.