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一、单项填空 1．Babies are not born with ______ moral sense；they can’t tell ______ difference between right and wrong. A．the；the B．a；a C．a；the D．/；a 解析：考查冠词。moral sense意思“是非感”。第一个空处指“孩子不会生来就有是非感”，因此用不定冠词；第二个空处考查的是固定短语：tell the difference between...and...，因此C项符合。 答案：C 2．All the students in his class insisted that Jack ______ the cleverest and that he ______ monitor. A．should be；chosen B．were；must be chosen C．was；should choose D．was；be chosen 解析：insist表示“坚持说”时宾语从句中用陈述语气，表示“坚决要求”时宾语从句中用虚拟语气(should)＋动词原形。第二个空主语he和choose之间是被动关系，因此选D项。句意：班里所有的学生都坚持说Jack是最聪明的，并坚决要求选他为班长。 答案：D 3．Two months later，as I couldn’t see there was any point in ______they had been investigating，I simply dropped out. A．which B．where C．what D．that 解析：考查名词性从句中连词的选用。从语境看，连词在这里引导宾语从句，并在从句中作宾语，因此用what。 | 
