1 . 听下面一段独白，回答以下小题。
1. Why is the baobab’s trunk really fat?

A．It is shaped by people.

B．It stores a large quantity of water.

C．It must be strong enough to support the tree.

2. What is the full height of a baobab?

A．About 12 metres.

B．About 15 metres.

C．About 30 metres.

3. What are baobabs often used as nowadays?

A．Shops.

B．Wildlife habitats.

C．Bus shelters.

2 . 听下面一段较长对话，回答以下小题。
1. What does Lily suggest Mr. Stenson doing?

A．Using the pesticide.

B．Changing the crop.

C．Watering the fields.

2. What do we know about Lily’s uncle?

A．He often shares his products.

B．He lives far from Lily.

C．He is good at farming.

3 . Why did the woman’s plants die according to the man?

A．From not enough water.

B．From not enough sun.

C．From not enough plant food.

4 . 听下面一段较长对话，回答以下小题。
1. What’s the size of the redwood forest in Muir Woods National Monument?

A．240 acres.

B．319 acres.

C．559 acres.

2. How old are the redwood trees in Muir Woods?

A．Less than 400 years old.

B．400 to 800 years old.

C．More than 1 ,000 years old.

3. What kind of climate do the redwood trees like?

A．Dry and sunny.

B．Wet and rainy.

C．Wet and foggy.

4. Which city is the redwood forest near?

A．New York.

B．San Francisco.

C．Los Angeles.

5 . What kind of plants does the neighbor have according to the man?

A．Weeds.

B．Wild flowers.

C．Flowers from store.