A．the artifacts which are illegally excavated.
B．the artifacts which are stored in the museum.
C．the priceless artifacts.
D．the valueless artifacts.

A．Museum officials will become unwilling to store artifacts.
B．An oversupply of salable artifacts will result and the demand for them will fall.
C．Artifacts that would have been displayed in public places will be sold to private collectors.
D．Illegal excavators will have an even larger supply of artifacts for resale.

单选题 根据下面的内容，回答题.

What might be the utmost challenge in the debates for the presidential candidates according to the first paragraph?

A．How to expose the weaknesses of the rivals.
B．How to perform well before a poll is Carried out.
C．How to persuade other people to vote for him with his speeches.
D．How to respond to the unexpected questions and criticisms of the rivals.