4．Forest s are made of trees.Do you know the following types（類型） of forests on Earth？
Temperate Forest （溫帶森林）
Temperate forests are found all over the world.These forests have four seasons.They changes （改變） at different times of the year.Many kinds of trees grow in a temperate forest.Their leave s change colon with the seasons.Leaves fall off the trees when the weather gets cool.As the weather warms up，the trees
sprout. Boreal Forest （寒帶森林）
Boreal forests are found in northern parts of the world，like North America，Asia，and Europe.Of the three types of forests，boreal forests have the shortest growing season，about 130 days.There days are cold，making it difficult for life.The largest boreal forest is in Russia，Europe.Animals there get used to the cold weather by growing thick fur（厚厚的皮毛）.
Tropical Rainforest（熱帶雨林）
You may guess that it rains a lot in a tropical rainforest .You are right!Tropical rain forests are bot and wet.These forests cover（覆蓋）only a tenth of the Earth，yet they are home to more kinds of plants and animals than any other places.The biggest tropical rainforest is the Amazon.It is in South America and it's home to 10% of the world's plants and animals.
Trees give us oxygen.They help clean the air.Cutting down too many trees will hurt the environment（環(huán)境）.
（1）How many kinds of forests are mentioned in the passage？
A．4.
B．3.
C．2.
D．1.
（2）The underlined word "sprout" in the passage means
A．growing new roots.
B．growing new leaves.
C．growing fruits.
D．growing new flowers.
（3）The biggest boreal forest is in
.
A．Africa
B．South America
C．Europe
D．North America
（4）The best kind of forest for plants and animals to live in is
.
A．a(chǎn) rainforest
B．a(chǎn) temperate forest
C．a(chǎn) boreal forest
D．a(chǎn) tropical rainforest
（5）This passage is mainly about
.
A．three kinds of forests
B．a(chǎn)nimals in the forests
C．weather of the forests
D．plants in the forests
