噬菌体侵染细菌的实验证明了() A.蛋白质是遗传物质 B.多糖是遗传物质 C

题型:单项选择题

问题:

噬菌体侵染细菌的实验证明了()

A.蛋白质是遗传物质

B.多糖是遗传物质

C.DNA是遗传物质

D.RNA是遗传物质

考点:高中生物人类对遗传物质的探索过程人类对遗传物质的探索过程题库
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深夜,某同学由于感冒发烧,母亲急忙用棉球在其额头上擦些酒精退烧,主要是因为酒精______时要吸收热量.

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What a busy day! The three boys were fed, bathed and changed into their nightclothes.Mary had        them a story and finally they were asleep. “Babysitting (照看) the three boys aged eight, six and four is extremely     ,” she thought. “Sleep, " she considered, "if only I could!" But she had difficult homework to complete. Leaning back, she        her feet onto the sofa to get comfortable. Whoever said babysitting was a(n)       way to make money obviously hadn't met the three boys, she thought.The television was on, the room was warm, and the lights were dim.Mary's        felt heavier and heavier.I mustn't sleep, she thought—which was       whatshe did, of course.
Strangely enough, she soon        that she was a world-famous chef (主厨). She made a        and wore diamonds and designer clothes. Most days she     by the pool, meeting the rich and famous or reading—her favorite hobby. She        took the leading role in her own TV show. Then she woke up, shocked and confused.       was pouring from the kitchen. Rushing to investigate, she was met by three        little faces and some very burnt bread.
小题1:
A.givenB.written C.toldD.taught
小题2:
A.successfulB.helpfulC.tiringD.surprisng
小题3:
A.shookB.putC.bentD.kept
小题4:
A.difficultB.boringC.importantD.easy
小题5:
A.eyesB.mindC.heartD.legs
小题6:
A.nicelyB.exactlyC.curiouslyD.carelessly
小题7:
A.realizedB.remindedC.leantD.dreamt
小题8:
A.decisionB.fortuneC.businessD.plan
小题9:
A.cleanedB.relaxedC.cookedD.slept
小题10:
A.justB.everC.evenD.only
小题11:
A.SmokeB.LightC.WaterD.Fire
小题12:
A.cheerfulB.strangeC.guiltyD.confident
题型:单项选择题

普通移动台、车载台、专用移动台所支持的业务是完全相同的。

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初种麻疹减毒活疫苗最适合的年龄是()

A.出生后1周

B.出生后1个月

C.出生后2~4个月

D.出生后2~6个月

E.满8个月

题型:单项选择题

他是著名的文学家,但是,他并不是一个从小就爱读书的人。旅行占去了他很大部分的少年时光,任性贪玩的他27岁才发奋读书,考试却不是很顺利。但是,幸好欧阳修这个伯乐让他得以迅速走红。请问他是谁?

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