__________ anything about the accident, he went to work as well.

A. feeling uncomfortably hot on the equator

B. flying over the North Pole

C. flying over the equator

D.making homes on the equator

A. a good place to land at by aeroplane

B. a good place to fly over

C. a good place to fly past

D. a good place to live in

A. planes fly higher than at the equator

B. the eyes can reach about 4,000 meters

C. planes are clear of bad weather

D. planes fly more quickly than at the equator

A. in warm air

B. in cold air

C. when it reaches the polar region

D. only when the clouds are down low

A. they do not land there

B. there are no clouds at all

C. they can cross the ice with special equipment

D. it is very cold

A. They help him make money.

B. They give him wood and other products.

C. They help him prevent droughts and floods.

D. They give him shade.

A. New trees are not looked after properly.

B. Many trees have been cut down by man.

C. Man has not paid enough attention to planting trees.

D. All of the above.

A. Because an empire was set up.

B. Because the empire fell to pieces.

C. Because it lost its trees.

D. Because too much had been spent on wars.

A. a new medical invention

B. a new research on memories

C. a way of erasing painful memories

D. an argument about the research on the pill

A. cause the brain to fix memories

B. stop people remembering their experiences

C. prevent body producing certain chemicals

D. wipe out the emotional effects of memories