1 . 听下面一段独白，回答以下小题。
1. What did researchers study in two tests?

A．The way of seagulls’ stealing food.

B．The effects of staring at seagulls.

C．The different food thieves.

2. What did one fourth of birds do with eye contact in the test?

A．They flew away immediately.

B．They stood still and looked at the food.

C．They made an attempt to steal food.

3. What did Madeleine think of seagulls?

A．They snatched food violently.

B．They stole food secretly.

C．They attacked people aggressively.

4. How do people stop seagulls stealing food effectively?

A．By feeding them first.

B．By setting a big trap.

C．By staring at them.