A.An event of imagination. |
B.A scientific adventure. |
C.A research on space. |
D.A historic discovery. |
A.an earthquake | B.damages to cities |
C.an Earth explosion | D.huge waves |
A.Because the light and heat from the sun can not reach the earth. |
B.Because the land is covered with water |
C.Because people there can not live at the temperature of zero. |
D.Because wars break out among countries. |
A.the Earth could be hit by other objects in space |
B.what happened 65 million years ago was an invented story |
C.the human beings will die out in 2094 |
D.animals could not live in the cold climate |
A.worried | B.practical |
C.a scientist | D.full of imagination |