Question

两个英语选择题，急求详细解答！

Mary listened carefully ____ she might discover exactly what John wanted .
A so as that B in order that C in case D provided

Great as Einstein was , many of this assumptions ____ today and modified by contemporary scientists .
A are to challenge B may be challenged C are challenging D have been challenged

Answer 1

第一题选B,in order that 为了……表目的
只有so as to或so that,没有so as that
in case表示以防万一
provided有假如的意思。
第二题选C.
be challenging,有挑战性的，此为形容词固定格式。其它选项均为时态不对，且表示挑战的动作。

Answer 2

第一个是B 表示目的 他为了...所以听的很仔细
其他3个都是表示条件不符合题意
第2个是C
让步从句 其他几个都不能和today连用