Questions 1 to 5 are based on the following conversation.

4（）

单项选择题17（）

A．$15 million.
B．$50 million.
C．$15 billion.
D．100 times greater than the cost of producing these drugs.

单项选择题7（）

A．The trade deficit hit an all-time high in the previous quarter.
B．The rise in gross domestic product was equal to 6.8 percent in the third quarter.
C．The imbalance between imports and exports improved from July to September.
D．The rate of the British currency against the US dollar surged to a record high.