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铁是自然界分布最广的金属元素之一，铁及铁的化合物应用十分广泛。铁元素是人体的重要营养元素，铁的摄入量不足会引起（）

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M:The blouse seems a bit short.Do you have a bigger size?W:No,I’m afraid we don’t.They’re almost sold out.It’s the last sale day.Where does the conversation take place?（）

At home.
B. In a store.
C. At a restaurant.
D. In a hospital.

双杠杆气动差压变送器根据（）原理工作，通过（）可调整量程范围。

William Shakespeare is one of the most remarkable playwrights the world has ever known. （1）Name his four greatest tragedies. （2）What are the characteristics of the four tragedies in common？（3）Briefly summarize each hero’s weakness of nature.

“It was you that broke the new wood， Now is a time for carving. We have one sap and one root— Let there be commerce between us. What does the phrase “broke the new wood ” mean here？