单项选择题

A．They smile to cover embarrassment.
B．It is an unusual and even suspicious behavior.
C．They smile to show politeness.
D．It is an expression of pleasur
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单项选择题
A．Jobless.B．Wrong idea about the work they do.C．Choose their careers under the influence of these false images.D．Void certain careers.
A．Jobless.
B．Wrong idea about the work they do.
C．Choose their careers under the influence of these false images.
D．Void certain careers.
填空题
Salopek said that he______to Sudan to report again although there were a lot of difficulties.
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