Thousands of years ago much of our earth was covered with blocks（块）of ice．These ice blocks were as tall as high buildings in modern cities．Most of the ice was in the northern part of the world． Then the ice blocks started to move south．Cold and rain came with the ice．Animals and people had to move． At last, the ice began to melt （融化）．After half a million years, most of it had melted．More than half of the earth became covered with water．The climate became much warmer．Things began to grow．The earth began to look the way it looks today．
Thousands of years ago our earth was very ________．

A．warm

B．hot

C．cool

D．cold

What did animals and people try to do when the ice blocks moved south?

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．

The melting ice may help to form___________.

A．mountains and valleys	B．the sun,the moon and the earth
C．cities and countries	D．seas,lakes and rivers

The underlined word "climate" means ________．

A．the freezing ice

B．the weather of the year

C．the moving of the ice blocks

D．a plant or an animal

Which of these things maybe happened because the Ice Age ended?
a．Forests grew
b．Food became harder to find
c．Fishing became easier
d．The temperature dropped．

A．a; b

B．b; d

C．c; d

D．a; c