IN A SUN BATTERY, A PHOTOSENSITIVE SEMI-CONDUCTING SUBSTANCE SUCH...

60. In a sun battery, a photosensitive semi-conducting substance such as silicon crystal is the source

a b c d

of electricity.

II. READING:

A. Choose A, B, C or D for each of the following blanks.

POLAR ADVENTURE

In March 1999, Amy Clink, a Brazilian yachtsman and polar adventurer, became the first man to circle

Antarctica while staying south of 50 degrees latitude. He (61) ... the most dangerous sea

route in the world. Klink was already (62) ... known because in 1984 he had rowed across

the Atlantic in a small boat. The book (63) ……….. , based on his (64) ... on that

trip, had by then sold millions of copies.

For his polar adventure, Clink built his (65)... boat. He (66) ... off in 1998

from South Georgia and he arrived back there 88 days later - although he (67) ... eleven

of those days on dry land in Antarctica. He did not stop there out of (68) ... , but because

he wanted to see he Antarctic Peninsula.

Klink knew that his (69) ... would be dangerous. On the way he had to be careful to

(70) ...huge floating blocks of ice. These icebergs as they are called, were everywhere and

(71) ... one of them would have been a disaster. As Clink knew that any rescue mission

would have been impossible in the rough seas, he did not (72) ... to take a life-boat.

When he sailed into (73) ... winds 750 miles south of Tasmania, he met waves that

were twenty-five metres high. This meant staying awake most of the time. He only managed to sleep for

twenty-minute (74) ... at a stretch. But he succeeded in the end, (75) ... all the

difficulties that he had to face.