单项选择题

What’s the purpose of the scientists in studying tree tings（）

A．To examine the chemical elements in the Ice Age.
B．To look into the pattern of solar wind activity.
C．To analyze the composition of different trees.
D．To find out the origin of carbon-14 on Earth.

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单项选择题
How does the man feel about the course（）

A．He wishes to have more courses like it.
B．He finds it hard to follow the teacher.
C．He wishes the teacher would talk more.
D．He doesn’t like the teacher’s accent.
单项选择题
What are editors and publishers doing to attract the non-readers（）

A．Lowering the prices of their newspapers.
B．Shortening their news stories.
C．Adding variety to their newspaper content.
D．Including more advertisements in their newspapers.
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