In the tropic rainforest there is a wide range of species peculiar to this area.()

单项选择题The spacecraft touched down on schedule and the astronauts were helped out of it().

A. launched
B. operated
C. landed
D. crashed

单项选择题The Chinese economy is less affected, so there is no reason to take a dim view of economic growth().

A. pessimistic
B. black
C. vague
D. positive