A.warm | B.hot | C.cool | D.cold |
A.They tried to stop them moving. |
B.They tried to melt them. |
C.They tried to move behind them. |
D.They tried to stay ahead of them. |
A.mountains and valleys | B.the sun,the moon and the earth |
C.cities and countries | D.seas,lakes and rivers |
A.the freezing ice |
B.the weather of the year |
C.the moving of the ice blocks |
D.a plant or an animal |
A.a; b | B.b; d | C.c; d | D.a; c |