单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to the Mars Theory, why does the moon contain little iron

A．The Moon formed from pieces of Earth’s crust.
B．The Moon was struck by another planet.
C．The Moon’s composition resembles that of Mars.
D．The Moon’s mineral content has changed over time.

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单项选择题

Question 28 is based on the following news. At the end of the news item, you will be given 5 seconds to answer the question. Now listen to the news.

A．Because the advice they had provided is conflicting.
B．Because Saddam Hussein didn’t trust them.
C．Because they didn’t want to defend for Saddam Hussein.
D．Because they were backed by the US government.

单项选择题

Which of the following statements is NOT true according to the report

A．Workers made tunnels through ice.
B．Construction workers often use oxygen bottles to breathe.
C．The new railway will use ordinary trains.
D．The new line is to start operation in 2006.

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to the Mars Theory, why does the moon contain little iron 您的浏览器不支持 audio 元素。

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to the Mars Theory, why does the moon contain little iron