passage three Questions 33 to 35 are based on the passage you have just heard.

A．Wars or natural disasters make them lose their families.
B．They went to help their families earn enough money to survive.
C．They are poor.
D．All the above.

A．Building relationship with outer space,
B．Making profits.
C．Creating a stepping-stone to scientific research.
D．Fostering international scientific cooperation.