问题描述：
问一个sat语法题
( ) to South America remains uncertain,but HR expedition demonstrated that they could have done so.
括号里面是A(The actrality of the sailing by the ancient Egyptians)
B(That the ancient Egyptians actually sailed)
正确答案是B.请问A怎么错了?B怎么对了?
( ) to South America remains uncertain,but HR expedition demonstrated that they could have done so.
括号里面是A(The actrality of the sailing by the ancient Egyptians)
B(That the ancient Egyptians actually sailed)
正确答案是B.请问A怎么错了?B怎么对了?
问题解答：
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