单项选择题

When an Alexandrian wrote a book,

A．encyclopedias are close at hand.
B．he can refer to a biographical dictionary.
C．he may recopy every word he wrote.
D．he can ask a copyist to help him to write.

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单项选择题

What are the speakers mainly discussing

A．Ways to determine the age of a fossil.
B．The identity of a fossil the woman found.
C．A comparison of two shellfish fossils.
D．Plans for a field trip to look for fossils.

单项选择题

What does this passage mainly talk about

A．Computers have become part of our daily lives.
B．Computers have advantages as well as disadvantages.
C．People have different attitudes to computers.
D．More and more families will own computers.