The manager was not sure
whether he could employ enough skilled workers.
Ⅳ.单项填空
1.Despite barriers and hardships,they ______ the research on cloning tissues.
A.come up with
B.catch up with
C.push ahead with
D.put up with
答案 C [句意:尽管遇到重重阻碍和困难,他们毅然进行克隆生物组织的研究。push ahead with毅然推进。]
2.In his victory speech,______ before a huge crowd of his supporters,Obama declared that “change has come to America”.
A.having delivered
B.to be delivered
C.delivering
D.delivered
答案 D [句意:在面向大批支持者发表的获胜演讲中,奥巴马宣称“变革已经来到美国”。根据语意可知,Obama发表演讲是过去的事且speech与deliver存在动宾关系,所以用过去分词表示被动和完成,相当于“which was delivered”。]
3.Soon after the war,one family who lived in Pennsylvania ______ me and brought me up.
A.had adopted
B.adopted
C.would adopt
D.has adopted
答案 B [句意:战后不久,住在宾夕法尼亚州的一个家庭收养了我并把我养大。adopted与brought并列作句子的谓语。]
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