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【简答题】
什么是石鼓文?
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举一反三
【单选题】纵隔畸胎瘤好发于
A.
前纵隔
B.
中纵膈
C.
后纵膈
D.
后下纵膈
E.
气管旁
【单选题】纵隔畸胎瘤好发于:()。
A.
前纵隔
B.
中纵隔
C.
后上纵隔
D.
后下纵隔
E.
气管旁
【单选题】It ____hard when I was on my way home.
A.
rain
B.
raining
C.
was raining
D.
were raining
【简答题】根据所给汉语提示,写出空白处各单词的正确形式。每空限填一词。 Yesterday afternoon, when I was on my way home, it began to rain. I  1______ (感觉) worried, because I didn't 2______ (带) my umbrella. My hair and my clothes were all wet....
【单选题】纵隔畸胎瘤好发部位
A.
前上纵膈
B.
后上纵隔
C.
前纵隔
D.
后纵隔
E.
中纵隔
【简答题】词汇运用。 Yesterday afternoon, when I was on my way home, it began to rain. I (1)f______ (感觉) worried, because I didn't bring my (2)______ (雨伞). My hair and my clothes were all wet. When I went past a (3)...
【单选题】纵隔畸胎瘤好发于:
A.
前纵隔
B.
中纵隔
C.
后上纵隔
D.
后下纵隔
【单选题】老唐有甲、乙、丙、丁四个儿子,下列情形下继承人仍享有继承权的是
A.
甲故意杀害老唐
B.
乙篡改遗嘱,欲分得更多遗产
C.
丙为争夺遗产而杀害其他继承人
D.
丁不尽赡养义务,并经常虐待老唐,致其骨折
【多选题】筛选寡核苷酸探针的原则:
A.
长18~50nt,较长探针杂交时间较长,合成量低;较短探针特异性会差些。
B.
G+C含量为40%~60%,超出此范围则会增加非特异杂交。
C.
探针分子内不应存在互补区,否则会出现抑制探针杂交的“发夹”状结构。
D.
避免单一碱基的重复出现(不能多于4个),如-CCCCC-。
【简答题】One afternoon,when I was on my way home, the sky 小题1: changed suddenly.Dark cloud were gathering. I began     小题2: to feel worrying because I didn’t have either a raincoat    小题3: or umbrella.It soon ...
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