D. could be used by one’s great-grandchildren even decades later

　　3. Which of the following is true according to the passage?

　　A. The investment in forever stamps will bring adequate reward.

　　B. America will be the first country to issue forever stamps.

　　C. The design of the “forever stamp” remains to be revealed.

　　D. 2-or 3-cent stamps will no longer be printed in the future.

　　4. What can be concluded from the passage?

　　A. With forever stamps, there will be no need to worry about rate changes.

　　B. Postal workers will benefit most from the sales of forever stamps.

　　C. The inflation has become a threat to the sales of first-class stamps.

　　D. New interest will be aroused in collecting forever stamps.

　　【参考答案】1-4 CDCA

　　阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。

　　FILTON, just outside Bristol, is where Britain’s fleet of Concorde supersonic（超音速的）airliners was built. There, something remarkable is being created. Little by little a machine is “printing” a complex titanium bracket (钛合金支架), about the size of a shoe, which normally would have to be cut from a solid block of metal. Brackets are only the beginning. The researchers at Filton have a much bigger ambition: to print the entire wing of an airliner.

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