问题
选择题
Visitors not to touch the exhibits.
A．will request
B．request
C．are requested
D．are requesting
答案
答案：C
题目分析：句意：游客不被允许触摸展览品。分析语境可知为被动语态，故选C。
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Visitors not to touch the exhibits.
A．will request
B．request
C．are requested
D．are requesting
答案：C
题目分析：句意：游客不被允许触摸展览品。分析语境可知为被动语态，故选C。