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【单选题】
两个重言式的析取为( )A.
矛盾式
B.
可满足式
C.
蕴含式
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举一反三
【单选题】He ____to go to Beijing today, but he postponed the trip when he heard that there would be a downpour at noon.
A.
was intending
B.
would intend
C.
had intended
D.
intended
【单选题】He looked dismayed when he heard the news.
A.
pale
B.
hurtful
C.
doubtful
D.
disappointed
【单选题】下列关于细胞因子的描述不正确的是
A.
由休止期细胞分泌
B.
作用具有多效性
C.
由免疫活性细胞分泌
D.
作用具有重叠性
E.
可通过旁分泌、自分泌或内分泌的方式发挥作用
【单选题】He was so ____ _when he heard the ____ ___ news that he got the first prize in the contest.
A.
exciting, exciting
B.
exciting, excited
C.
excited, excited
D.
excited, exciting
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