1 . 听下面一段独白，回答以下小题。
1. What did British scientists find about Stonehenge?

A．Why people built it.

B．Where some stones were from.

C．How people moved the stones.

2. What did the researchers do to the small piece of stone?

A．They kept it secret.

B．They used it to build structures.

C．They performed chemical testing.

3. What does the speaker mainly talk about?

A．A research on Stonehenge.

B．The secrets of Stonehenge.

C．The process of building Stonehenge.

2 . 听下面一段独白，回答以下小题。
1. Who designed Big Ben?

A．Queen Elizabeth.

B．Benjamin Hall.

C．Augustus Pugin.

2. How many steps are there in the tower?

A．150.

B．334.

C．433.

3. Why was the tower closed?

A．To make repairs.

B．To mark Queen Elizabeth’s ruling.

C．To welcome the Olympic Games.