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【单选题】
细胞膜不仅是细胞结构上的边界,使细胞具有一个相对稳定的内部环境,同时在细胞与环境之间进行物质交换、能量交换及信息传递过程中起着决定性作用。本课通过视频、动画、图形等观察方式学习理解细胞膜的主要功能,为进一步学习细胞膜的结构,以及对整个生物膜的结构和功能全面的了解,树立结构与功能相适应的生命观念奠定基础。
A.
细胞壁
B.
细胞膜
C.
细胞核
D.
细胞膜表面的蛋白质
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her car can not drive
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【单选题】What's the problem of Miss Ling's car?
A.
the brake pedal has abnormal knocking
B.
the chassis has abnormal knocking
C.
the engine has abnormal knocking
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【简答题】_____________ will keep Miss Ling's car running smoothly and avoid break downs.
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相关题目:
【简答题】Miss Ling's car has some prblems such as ________________ and ______________ frequently.
查看完整题目与答案
【判断题】颈动脉窦区血压升高时心输出量增加。
A.
正确
B.
错误
查看完整题目与答案
【单选题】why does Miss Ling want to check her car?
A.
her car can not drive
B.
she is taking a long road trip
C.
her car has some problems
查看完整题目与答案
【简答题】Miss Ling's car has some problems such as ( ) and ( ) frequently.
查看完整题目与答案
【单选题】Most of us value our time, but some of us treat it ________ it had no value at all.
A.
even if
B.
as long as
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【简答题】排列下列化合物的沸点高低次序: A 异丁醇 B 叔丁醇 C1 , 4- 丁二醇 D 正丙醇 E 丁烯
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【判断题】Miss Ling’s car has the problem with right turning signal is not working.
A.
正确
B.
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查看完整题目与答案
【简答题】某学校生物科技活动小组利用学校空地建立了一个小型农业生态园.在园内,同学们开展了一系列植物栽培和科学探究活动. (1)在移栽某种蔬菜苗时,为了提高移栽植株的成活率,同学们常选择在傍晚或阴天进行.其原因是______. (2)为了探究提高生态园内蔬菜产量的科学方法,同学们选择萝卜作为研究对象进行试验.他们在三个温室中分别种植了相同的萝卜幼苗,温室的温度和二氧化碳条件的控制情况如下表所示(每个温室的光...
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【单选题】What's the problem of Miss Ling's car?
A.
the brake pedal has abnormal knocking
B.
the chassis has abnormal knocking
C.
the engine has abnormal knocking
查看完整题目与答案
【简答题】_____________ will keep Miss Ling's car running smoothly and avoid break downs.
查看完整题目与答案