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【单选题】
生物膜上的蛋白质通常与多糖结合成糖蛋白。在细胞生命活动中,糖蛋白在细胞的识别,以及细胞内外的信号传导中有重要的功能。下列生物结构中,糖含量最高的可能是( )
A.
粗面内质网膜
B.
线粒体外膜
C.
细胞膜
D.
滑面内质网膜
E.
细胞核外膜
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【简答题】If I were a boy again, I would do the followingthings: Because it takes 1) _________ to succeed, I would practice it moreoften and never give up a thing easily; I would develop the habit of 2) _______...
【单选题】热原主要是微生物的代谢产物,其致热活性中心为:
A.
多糖
B.
磷脂
C.
胆固醇
D.
脂多糖
E.
蛋白质
【判断题】沥青混合料中如果矿粉颗粒之间接触是自由沥青所连接,则具有较大的粘聚力。( )
A.
正确
B.
错误
【简答题】If I were a boy again, I would do the following things: Because it takes 1) ____________ to succeed, I would practice it more often and never give up a thing easily; I would develop the habit of 2) __...
【单选题】It would also give an incentive to countries without controls on emissions to introduce their own carbon taxes, in order to _____ a share of the revenues.
A.
grab
B.
win
C.
catch
D.
receive
【简答题】Complete the following summary with the words from the passage. If I were a boy again, I would do the following things: Because it takes 1) ____________ to succeed, I would practice it more often and ...
【单选题】热原主要是微生物的代谢产物,其致热中心为( )。
A.
蛋白质
B.
脂多糖
C.
磷脂
D.
胆固醇
E.
激素
【简答题】Complete the following summary with the words from the passage. If I were a boy again, I would do the following things: Because it takes 1) ____________ to succeed, I would practice it more often and ...
【简答题】happy unworthy importantly cultivate cultivation give up optimistic perseverance concentration courteous If I were a boy again, I would do the following things: Because it takes (1) to...
【单选题】“Longer life would give us a chance to recover from our mistakes and promote long term thinking,” says Dr Gregory Stock of the University Of California School Of Public Health. “It would also raise pr...
A.
Spending more time with his family.
B.
Having more education.
C.
Realizing more dreams.
D.
Working longer.
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