单项选择题

The findings of James and other scientists in their work______.

A．remain a theory to be further proved
B．have been challenged by many other experts
C．are practiced by the researchers themselves
D．have been generally accepted

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热门试题

单项选择题

In order to enter the Marathon, participants must______.

A．pay an entrance fee
B．assemble in one specific area
C．be able to run 26 miles, 385 yards
D．compete for the right to take part

单项选择题

The main attraction of the Marathon for non-participant is______.

A．the amount of money raised for charity
B．the chance to take part the following year
C．witnessing the contestants' determination
D．a concern with the race' s history