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【单选题】
证明核酸是遗传变异物质基础的三个经典实验是( )。A.
转化、变量和涂布实验
B.
转导、变量和影印培养实验转化、涂布和影印培养实验
C.
转导、变量培养实验转化和影印培养实验
D.
噬菌体感染实验、病毒拆开重建实验以及转化实验
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【简答题】选词填空。 1 How often do you go to work ( by/on) foot? 2 How often do you travel ( by/on) train? 3 How often do you ( drive/ride) a car? 4 How often do you ( take/drive) a taxi home? 5 How often do you ( ...
【单选题】在雅典,国家为担任公职和参加联邦活动的公民发放工资和津贴的主要目的是
A.
高薪养廉
B.
对为国家作出贡献的人的一种补偿
C.
以吸引妇女参政
D.
为鼓励和保证公民参政的积极性
【简答题】从方框中选择合适的词填空。 advertise cook diet run disadvantage 1. How often do you go __________? 2. My father does all the __________ at home. 3. His poor eyesight was a __________ to him. 4. We ...
【简答题】选择正确的单词完成句子。 much, often, long, many 1. —How ______ do you watch TV each day? —For about one hour. 2. —How ______ does your sister exercise? —Twice a week. 3. —How ______ is the sweater? —150 yuan,. 4...
【单选题】(In) the nineteenth century the Mohave Indians (lived) in the Northern Hemisphere grew (their) crops on river bottom (lands).
A.
In
B.
lived
C.
their
D.
lands
【简答题】根据句意,选词填空。 watch watched (1) A: How was your winter vacation? B: I ____________ TV. (2) A: What will you do? B: I will _____________ TV. (3) A: What do you often do on Sunday? B: I often ...
【单选题】据中国地震台网测定, 2015 年 4 月 25 日 14 时 11 分,尼泊尔 ( 28.2°N , 84.7°E ) 发生里氏 8.1 级地震,震源深度 20 千米。此次地震的原因是
A.
位于环太平洋地震带上
B.
亚 洲 板块与印度洋板块碰撞挤压
C.
印度洋板块与欧亚板块碰撞挤压
D.
非洲板块与欧亚板块碰撞挤压
【简答题】四、根据句意,选词填空。 watch watched (1) A: How was your winter vacation? B: I ____________ TV. (2) A: What will you do? B: I will _____________ TV. (3) A: What do you often do on Sunday? B: I often go...
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