What does the author mean by 'House Republicans have threatened to roll them back' (Line 2, Para. 5) ? A.House Republicans want to make the rules move forward. B.House Republicans require more support to the rules. C.House Republicans threaten to replace the rules with a new one. D.House Republicans declare to end the rules gradually.
A.House B. B.House C. C.House D. D.House E.
【参考答案】
D 定位:由题干中的“HouseRepublicanshavethreatenedtorollthemback”......