Injanuary,2004,theUnitedStatessuccessfullylaunched"Spirit",aMarsExplorationRover,anewmilestoneinthehistoryofmankindA.itmarkedB.markingC.markedD.tomarkThethieffelltotheground,hisleftfootandblooddownfromhism

Question

In january,2004,the United States successfully launched"Spirit",a Mars Exploration Rover,____ a new milestone in the history of mankind
A.it marked B.marking C.marked D.to mark
The thief fell to the ground ,his left foot ___and blood____down from his mouth
A.breaking,running B.broken,running C.breaking,run
正确答案是BB

Answer 1

1.选C. 因为后一句是整个句子的一个短句,所以不能选A,如果选A,那后一句就是一个独立的句子,不能用逗号.在B.C.D中,B是正在进行时态,C是过去时态,D是to do形式,是将来时态.根据句意,应选C,过去时态.
2.选B. broken是一个形容状态的形容词.句中的人的脚已经是受伤的状态,所以选broken.而run是一个表动作过程的词.血正在流出,所以应选running.联合起来看,应选B.