1 . 听下面一段独白，回答以下小题。
1. What happens when you rub a balloon against your hair?

A．It gets sticky.

B．It becomes positively charged.

C．It picks up extra electrons and becomes negatively charged.

2. Why does the negatively charged balloon stick to the wall?

A．Because the wall is also negatively charged.

B．Because opposites attract.

C．Because the wall becomes positively charged.

3. What is the invisible force mentioned in the speech that causes the balloon to stick to the wall?

A．Magnetism.

B．Static electricity.

C．Gravitational pull.

4. What term is used to describe the process of the balloon picking up extra electrons?

A．Magnetization.

B．Electronization.

C．Ionization.

5. What is the main idea behind the explanation of static electricity in the speech?

A．Balloons sticking to walls.

B．Rubbing objects together.

C．Positive charges in the air.

6. What happens to the balloon after it picks up extra electrons?

A．It becomes neutrally charged.

B．It becomes positively charged.

C．It becomes negatively charged.

7. What does the speaker compare static electricity to in the speech?

A．Magic.

B．Lightning.

C．Magnets.

2 . 听下面一段独白，回答以下小题。1.

A．Try not to think of a polar bear.	B．Try to pose as a polar bear.
C．Stop thinking about their feet.	D．Observe themselves for a few minutes.

2.

A．Those who were informed of the purpose of the experiment.

B．Those who were told to think of white bears on purpose.

C．Those who were shown pictures of white bears at intervals.

D．Those who were asked not to think of a white bear from the beginning.

3.

A．There will be greater chance of us controlling the thoughts.

B．Old doubts will be more likely to come to the surface.

C．we will be able to get rid of negative thoughts.

D．We will be bothered more likely by the thoughts.