单项选择题

A. Tell the operator what has happened.
B. Ask the operator to put you through.
C. Check the phone number and call again.
D. Ask the operator what’s wrong.
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填空题
The discovery of a magical cure called leptin, as reported in Science met with unusual excitement in the United States.
单项选择题
A. Confused.B. Surprised.C. Encouraged.D. Annoyed.
A. Confused.
B. Surprised.
C. Encouraged.
D. Annoyed.
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