[单项选择]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 no bigger than cats.
These small horses lived in the forest (森林). Their many toes helped the horses run over the soft (柔软的) , wet ground.
It was very hot in the forest. Bat the weather changed. It became cold (寒冷的,伤风). Many trees could not live in cold weather. The trees died and fell (落下;下降). Open fields took the place of forests. The sun made the ground dry and hard.
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 while, horses had only one hard toe on each foot.

Millions of years ago, horses were as big as cats.
A. Right
B. Wrong
C. Doesn’t say

[单项选择]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 no bigger than cats.
These small horses lived in the forest (森林). Their many toes helped the horses run over the soft (柔软的) , wet ground.
It was very hot in the forest. Bat the weather changed. It became cold (寒冷的,伤风). Many trees could not live in cold weather. The trees died and fell (落下;下降). Open fields took the place of forests. The sun made the ground dry and hard.
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 while, horses had only one hard toe on each foot.

Many, many years ago, horses had seven toes.
A. Right
B. Wrong
C. Doesn’t say

[单项选择]F
Have you ever seen people dance Some dances are fast and others are slow. People’s feet move when they dance. They keep on moving until the music stops.
People have enjoyed dancing for a very long time. This story is about a different kind of dance. It is a dance without people or music. Yet this dance is one of the oldest in the world. It is the dance of bees.
If you have ever watched bees, you know that they are very clever. They also work hard looking for food and bringing it back to their home. The home of bees is called a bee-hive. Here they make the honey. Where does the honey come from
Bees live on food from flowers. When a bee rests on a flower, it tries to go to its center. There it takes in as much food as its body can hold. Then it carries the food back to the hive. At the hive, bees change the food from flowers into honey. Then they fly away for more food like that.
How does the bee tell others to find
A. Right.
B. Wrong.
C. Doesn’t Say.

[单项选择]F
Have you ever seen people dance Some dances are fast and others are slow. People’s feet move when they dance. They keep on moving until the music stops.
People have enjoyed dancing for a very long time. This story is about a different kind of dance. It is a dance without people or music. Yet this dance is one of the oldest in the world. It is the dance of bees.
If you have ever watched bees, you know that they are very clever. They also work hard looking for food and bringing it back to their home. The home of bees is called a bee-hive. Here they make the honey. Where does the honey come from
Bees live on food from flowers. When a bee rests on a flower, it tries to go to its center. There it takes in as much food as its body can hold. Then it carries the food back to the hive. At the hive, bees change the food from flowers into honey. Then they fly away for more food like that.
How does the bee tell others to find the sweet f
A. Right.
B. Wrong.
C. Doesn’t Say.