Lesson 12 Life on a desert island荒岛生活
Listen to the tape then answer the question below.
听录音,然后回答以下问题。
What was exceptional about the two men's stay on the desert island?
Most of us have for...
Lesson 26 The past life of the earth地球上的昔日生命
First listen and then answer the following question.
听录音,然后回答以下问题。
What is the main condition for the preservation of the remains of any living cr...