1 . The new CRH train between Beijing and Shanghai _____ speed has been limited to 300 km/h focuses more on the safety of the passengers.

A．whose

B．where

C．that

D．which

2 . The plan is designed to create an atmosphere, ________ the staff are motivated to work hard.（用适当的词填空）

3 . China first had to put a satellite in orbit above the moon in a spot ___________it could send signals to the spacecraft and to Earth.

A．that

B．which

C．where

D．when

4 . This is the middle school ________ Mr. Smith taught English ten years ago.（用适当的词填空）

5 . The factory _______ his father worked was destroyed in the flood. (用适当的词填空)