(B) 1.The number of people lost their lives in Indonesian earthquake reached as many as 6200.
A. which B. who C. Whom
(C) 2.Have you been to the new Sports Center is just opened in town? --No, not yet.
A. where B. who C. that
(C)3.This is a new museum ______ was built last year.
A. when B. who C. which
(A) 4.Do you know the girl _____ is singing on the stage?
A. who B. what C. which

What do you know about the spaceships?
1 Spaceships mainly use electronic controls.
2.Astronauts use computers to control the speed and direction of their spaceships, even the temperature.