问题:
[唐]王勃归舟归骑俨成行,江南江北互相望。谁谓波澜才一水,已觉山川是两乡。送柴侍御[唐]王昌龄沅水通波接武冈,送君不觉有离伤。青山一道同云雨,明月何曾是两乡?19.这两首送别诗在情感上,《秋江送别》突出________;而《送柴侍御》突出________,与王勃《送杜少府之任蜀川》中的“海内存知己,...
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A. 孟良崮战役B. 淮海战役C. 济南战役D. 羊马河战役
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Each play has a theme or central idea which the playwright(剧作家)hopes to get across through dialogue and action. A few characters are used to create a ...
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That is by design. Bellevue,a fast-growing city,just east of Seattle,uses a system that is gaining popularity around the US:intersection(十字路口)signals ...
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A.臭氧层破坏B.酸雨形成C.水体污染D.温室效应
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A.淀粉的结构单元是蔗糖B.胆固醇是人体所需的物质C.蛋白质是生物体内重要的贮能物质D.人细胞中储存遗传信息的物质是RNA
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A.高尔基体断裂后的囊泡结构可形成溶酶体B.中性粒细胞吞入的细菌可被溶酶体中的多种酶降解C.溶酶体是由脂双层构成的内、外两层膜包被的小泡D.大量碱性物质进入溶酶体可使溶酶体中酶的活性发生改变
问题:
A.注射某种流感疫苗后不会感染各种流感病毒B.接种脊髓灰质炎疫苗可产生针对脊髓灰质炎病毒的抗体C.接种破伤风疫苗比注射抗破伤风血清可获得更长时间的免疫力D.感染过新型冠状病毒且已完全恢复者的血清可用于治疗新冠肺炎患者
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Researchers from the University of Leipzig in Germany gathered more than 1,000 retired workers who were over age 75 and assessed the volunteers’ memor...
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I experienced years of loneliness as a child. 31 His friends teased him about babysitting his sister and his interests were far different from mine. W...
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One morning l 36 a lost lamb when I was in the top field,near where a motorway cuts through my land. ’The lamb had become separated from its 37 ,so I ...
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Some time after 10,000 BC,people made the first real attempt to control the world they lived 56 ,through agriculture. Over thousands of years,they beg...
问题:
A.细胞的厌氧呼吸产生的ATP比需氧呼吸的多B.细胞的厌氧呼吸在细胞溶胶和线粒体嵴上进行C.细胞的需氧呼吸与厌氧呼吸过程中都会产生丙酮酸D.若适当提高苹果果实贮藏环境中的O2浓度会增加酒精的生成量
问题:
A.癌细胞表面粘连蛋白增加,使其容易在组织间自由转移B.高等动物衰老细胞的线粒体体积随年龄增大而减小,呼吸变慢C.高等植物胚胎发育过程中,胚柄的退化是通过编程性细胞死亡实现的D.愈伤组织再分化形成多种类型的细胞,这些细胞中mRNA的种类和数量相同
问题:
A.核糖体的增生和环沟的形成B.染色体的出现和纺锤体的出现C.染色单体的形成和着丝粒的分裂D.中心体的复制和染色体组数的加倍