【外研版】八上 Module6 Unit3 Language in use 模块阅读能力提升 习题课件

(共14张PPT)
、阅读理解。
There are over 37, 000 known species(fh) of
spiders in different shapes and sizes in the world
The largest spiders live in the rain forests of South
America and are known as the "b
rd-eating
spiders
These spiders can grow up to 28 cm long
and they eat small birds. The smallest spiders are
from Western Samoa. These tiny spiders are less
than 0.5 mm long. They live in the plants tha
grow on mountain rocKs
Some people like to keep spiders as pets, but
most people don t like touching them.a great
number of people are afraid of them, mainly
because of their poison something will cause
death or harm. However, only thirty species of
spiders are very dangerous to humans. Spiders
provide benefits for humans by catching and eating
Insects, such as flies and mosquitoes(蚊子)
Spiders are different from other animals
because they make webs to catch the small insects
for food. The special silk of a spiders web is light
and strong
five times stronger than steel. Some
people have tried to raise spiders in order to collect
their silk, but no one has ever succeeded in doing
t. One reason is that it takes 670, 000 spiders to
produce half a
kilo of silk, and all of these spiders
need living insects for their food Besides, spiders
are usually solitary(独自的) animals, and need to