[单项选择]What is the purpose of the sea horse’s dorsal and pectoral fins（　）.
A. They allow it to maneuver effectively in a small areas.
B. They allow it to swim quickly over long distances.
C. Dorsal and pectoral fins have no function in sea horse.
D. Their multi-colored fins attract shrimp and other food.

[单项选择]What is the sea horse’s prehensile tail used for（　）.
A. Propelling it through moving currents.
B. Grasping sea grass or coral to stabilize it.
C. Fending off attacks form predators.
D. Moving food to its mouth, like an elephant’s trunk.

[单项选择]What is especially unique about sea horse（　）.
A. They make attractive ornaments in seashell shops.
B. They can be kept as pets in home aquariums.
C. They have much smaller scales than most fish.
D. Only the male sea horse becomes pregnant.

[填空题]

What is the characteristic of a sea horse It doesn’ t __________.

[填空题]

What does a sea horse do when it wants to stay in one place It takes hold of plants with__________.

[单项选择]What’s the man’s attitude towards what’s happening
A. He’s unwilling to wait in line.
B. He’s satisfied with the purchase.
C. It’s worthwhile to queue for tickets.
D. He’s impatient with the ticket sellers.

[单项选择]

What do you know about the sea We know that it looks very pretty when the sun is shining on it. We also know that it can be very rough when there is a strong wind. What other things do we know about it
The first thing—to remember is that the sea is very big. When you look at the map of the world you will find there is more water than land. The sea covers three quarters of the world.
The sea is also very deep in some places. It is not deep everywhere. Some parts of the sea are very shallow. But in some places the depth of the sea is very great. There is one spot, near Japan, where the sea is nearly 11 kilometres deep! The highest mountain in the world is about 9 kilometres high. If that mountain were put into the sea at that place, there would be 2 kilometres of water above it! What a deep place!
If you have swum in the sea, you know that it is salty. You can taste the salt. Rivers, which
A. When it is calm.
B. When the weather is fine.
C. When there is a strong wind.
D. When there is a storm.

[单项选择]
What do you know about the sea We know that it looks very pretty when the sun is shining on it. We also know that it can be very rough when there is a strong wind. What other things do we know about it The first thing to remember is that the sea is very big. When you look at the map of the world you will find there is more water than land. The sea covers three quarters of the world. The sea is also very deep in some places. It is not deep everywhere. Some parts of the sea are very shallow. But in some places the depth of the sea is very great. There is one spot, near Japan, where the sea is nearly 11 kilometers deep! The highest mountain in the world is about 9 kilometers high. If that mountain were put into the sea at that place, there would be 2 kilometers of water above it! What a deep place!
If you have swum in the sea, you know that it is salty. You can taste the salt. Rivers, which flow into the sea, carry salt from the
A. Right
B. Wrong
C. Not mentioned