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【单选题】
玻璃茶具般是将石英砂、纯碱和（）等混合后，在高温下融化、成形，再经冷却后制成的
A.
石灰石
B.
石灰岩
C.
石英石
D.
石英岩
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】When stars like our Sun die, they bloat to become red giants and then eject gigantic clouds of gas and dust into space. Increasingly, however, scientists found themselves at a profound loss to explain...
A.
explain-the possible way of death of our Sun.
B.
show the two types of red giants.
C.
discuss on the way of red giants to become white dwarfs.
D.
explore the origin of life.