15. D。这里别无他人，故他是
say to himself。
A thousand years
ago, Hong Kong was covered by a thick
forest. As more and more people came to 1 in Hong Kong, these trees were cut down and burnt. Now
there is 2 forest left, though there are still some
small areas(地方) covered
with trees. We call these woods.
Elephants,
tigers and many 3 animals were living in the thick forest.
When people came to live in Hong Kong,
the 4 began to die out. Early farmers grew rice
and 5 pigs and chickens in the valleys. They cut down
the trees and burnt them. They needed 6 to keep
themselves warm in winter, to cook their food and to keep away the dangerous
animals. Elephants quickly disappeared(消失) because there was not enough food for them.
7 did most of the wolves and tigers. Monkeys and many other animals
soon 8 in the same way.
You might think
that there are no longer any animals in Hong Kong
9 in the zoos. There are still about 36 different
animals 10 there. One of the most interesting of Hong Kong’s animals is the barking deer. These are
beautiful little animals 11 a rich brown coat and a
white patch(补丁) under the
tail. They look like deer 12 but they are much like a
dog 13 . In Hong Kong the barking deer has only a real enemy(敌人)- 14 . People
hunt these little animals though it is illegal(违法的). There are now not many barking deer left. So it is
important 15 people to protect (保护) wild animals.