题目内容
Sea otters（海獭）off the coast of California have an unusual method of getting food. They dive to the floor of the sea to find the shellfish（贝）they like，no matter how deep the sea is．
When an otter brings a shellfish to the surface of the sea water，he floats on his back and put the shellfish on his chest．Then the otter manages to dig the meat out of the shell with his sharp teeth．
Sea otters are especially fond of shellfish with a very hard shell．When the otter brings one of these，he also brings a stone．He puts the stone on his chest，holding the shellfish in his paws（爪）．He gives a good beat and breaks the hard shell on the stone．Then he has no trouble getting the meat in the hard shell．
1．From the passage we can see that these otters live _____________.
A．in the sea off the coast of California
B．on the land near the coast of California
C．on the floor of the sea
D．on the surface of the sea water
2．To catch shellfish, otters must _____________．
A．float on his back
B．dive to the floor of the sea where they can find them
C．come to the surface of the sea
D．dive to tile floor of the sea where it is very deep
3．The otters use stones to_____________．
A．dig the meat from the inside of the shell
B．dig the shellfish from the sea floor
C．break the hard shelIs so that they can eat the meat
D．break the meat so that they can eat it easily
4．Arrange the correct order about how a sea otter gets food from the inside of a shellfish．
a．It tries to get a shellfish．
b．It manages to break the shell on the stone．
c．It floats on his back putting the stone on his chest．
d．It gets a stone．
e．It digs the meat out of the shell with his teeth．
A．e，a，c，b，d B．c，a，d，e，b
C．b，a，e．e，d D．a，d，c，b，e
ABCD
A science book gives facts. Some science books tell us about animals. Some tell us about plants. Some tell us about outer space. This page tells us about animals.
Do you know that not only the fish but also some animals live in the sea? For example, the whale is not a fish. It can’t breathe in the water. It swims in the water. But it comes up for air.
The blue whale is the world’s biggest animal. There are other sea animals, too. One is called the dolphin. Dolphins need air to live. They breathe air, as whales do. Dolphins are very clever. They sometimes seem to speak to each other.
Many other animals live near the sea. Seals（海豹）and otters（水獭）love the sea. They swim and play there. They eat fish and sea plants. Seals and otters have thick fur. The fur keeps them warm.
【小题1】The passage mainly tells us about ____________.
| A．fishes | B．plants | C．science | D．sea animals |
| A．dolphins | B．fish | C．crocodiles | D．sea plants |
| A．The whale can swim in the sea like a fish. |
| B．The whale can breathe in the sea like a fish. |
| C．Both whales and dolphins are sea animals. |
| D．Seals and otters like living near the sea. |
| A．Meat. | B．Fruits. | C．Both fish and sea plants. | D．Leaves. |
| A．they are big animals | B．they like playing in the sea |
| C．they have thick fur | D．they eat enough food every day |
A science book gives facts. Some science books tell us about animals. Some tell us about plants. Some tell us about outer space. This page tells us about animals.
Do you know that not only the fish but also some animals live in the sea? For example, the whale is not a fish. It can't breathe in the water. It swims in the water. But it comes up for air.
The blue whale is the world's biggest animal. There are other sea animals, too. One is called the dolphin. Dolphins need air to live. They breathe air, as whales do. Dolphins are very clever. They sometimes seem to speak to each other.
Many other animals live near the sea. Seals (海豹) and otters（水獭）love the sea. They swim and play there, They eat smaller fish and sea plants. Seals and otters have thick fur. The fur keeps them warm.
【小题1】The passage mainly tells us about _______.
| A．fishes | B．plants | C．science | D．sea animals |
| A．The whale can swim in the sea like a fish. |
| B．The whale can breathe in the sea like a fish. |
| C．Both whales and dolphins are sea animals. |
| D．Seals and otters like living near the sea. |
| A．Only smaller fish. | B．Only sea plants. |
| C．Smaller fish and sea plants. | D．Blue whales and dolphins |
| A．they are big animals | B．they like playing in the sea |
| C．they have thick fur | D．they eat enough food every day |