1 . 听下面一段独白，回答以下小题。
1. What’s the weather like in the morning of May and June in Costa Rica?

A．Cloudy and warm.

B．Rainy and cold.

C．Dry and hot.

2. What are the advantages of travelling in May and June in Costa Rica?

A．There are more interesting things.

B．The weather is better.

C．The prices are lower.

3. When does the dry season start in Costa Rica?

A．In January.

B．In May.

C．In December.

4. When is the weather perfect in Costa Rica?

A．From February to April.

B．From May to June.

C．From July to August.

3 . 听下面一段独白，回答以下小题。
1. Which two oceans are connected by the Panama Canal?

A．The Pacific and Atlantic oceans.

B．The Atlantic and Indian oceans.

C．The Pacific and Indian oceans.

2. When was the canal finally completed?

A．In 1904.

B．In 1914.

C．In 1881.

3. What is the text mainly about?

A．The location of the Panama Canal.

B．The importance of the Panama Canal.

C．The time when the Panama Canal was built.

4. What is the talk most possibly from?

A．An announcement.

B．A speech.

C．A lecture.