Have you ever seen a horse with toes? Millions of years ago, horses had many toes. They had four
toes on each front foot. They had three toes on each back foot. These small horses lived in the forests.
Their toes helped them run over the soft, wet ground.
     It was once very hot in the forest. But the weather changed later. It became cold. Many trees  could
not live in such cold weather, so they died and fell.  Open fields took the place of forests. The sun made
the ground dry and hard. Horses began to get bigger with climate changing. On the dry, hard land, horses
needed only their middle toes for running. Their middle toes became hard. After a long time, horses had
only one hard toe on each foot. We call it hoof.

1. Long ago, the horse had four toes on each ______.
A. front footB.back foot
C. left foot D.right foot
2. Which of the following does this story lead you to believe?
A. Animals have always been the same as they are today.
B. When the climate changes, animals begin to change，too.
C. Weather stays the same all the year round.
D. Horses are smaller nowadays.
3. What did the horse need on dry, hard land?
A. Only their middle toes for running.
B.A lot of room for running.
C. Strong legs.
D. Harder feet.
4. The main idea of the story is that______.
A. the weather never changes
B.cats were once much bigger than horses
C. horses changed very much over the years
D. the weather was once very cold
5.The word"hood"in English means"______".
A. hard leg of a horse
B. the hard foot of certain animals
C. hard toe of a horse
D. hard hand of a horse

     Have you ever seen a horse with toes (脚趾)? Millions of years ago, horses had many toes. They had
four toes on each front foot. They had three toes on each back foot. The horses were smaller than cats.
     These small horses lived in the forest. Their many toes helped the horses run over the soft wet ground.
     It was very hot in the forest. But the weather changed. It became cold. Many trees couldn't live in
cold weather. The trees died and fell. Open field took the place of (代替) forests. The sun made the
ground dry and hard (坚硬).
     Horses began to change too. They began to get bigger. This took a long time. On the dry hard land,
horses needed only their middle toes for running. Their middle toes became hard. After a long time
horses had only one hard toe on each foot. We call this hard toe a hoof (马蹄).

1. Long ago, the horse had four toes on each of its _____.
    A. back feet
    B. front feet
    C. right feet 
2. The cats were _____ the horses at that time.
    A. much bigger
    B. smaller than
    C. bigger than
3. Which of the three sentences is true?
    A. The weather stays the same the whole year all over the world.
    B. When the weather changed, animals began to change too.
    C. Cats were bigger in the past than they are today. 
4. On the dry hard land _____.
    A. horses needed a lot of room for running
    B. a horse needed more than four toes for running
    C. horses needed only their middle toes for running
5. Now each horse has _____ on its feet.
    A. one toe 
    B. three toes
    C. four toes

    Have you ever seen a horse with toes (脚趾)? Millions of years ago, horses had many toes. They had
four toes on each front foot. They had three toes on each back foot. The horses were smaller than cats.
    These small horses lived in the forest. Their many toes helped the horses run over the soft wet ground. 
    It was very hot in the forest. But the weather changed. It became cold. Many trees couldn't live in cold
weather. The trees died and fell. Open field took the place of (代替) forests. The sun made the ground dry
and hard (坚硬). 
    Horses began to change too. They began to get bigger. This took a long time. On the dry hard land,
horses needed only their middle toes for running. Their middle toes became hard. After a long time horses
had only one hard toe on each foot. We call this hard toe a hoof (马蹄).

1. Long ago, the horse had four toes on each of its ______.

A. back feet
B. front feet
C. right feet

2. The cats were ______ the horses at that time.

A. much bigger
B. smaller than
C. bigger than

3. Which of the three sentences is true?

A. The weather stays the same the whole year all over the world.
B. When the weather changed, animals began to change too.
C. Cats were bigger in the past than they are today.

4. On the dry hard land ______.

A. horses needed a lot of room for running
B. a horse needed more than four toes for running
C. horses needed only their middle toes for running

5. Now each horse has ______ on its feet.

A. one toe
B. three toes
C. four toes