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【多选题】
细胞膜的功能主要有A.
可以维持细胞的完整性,使细胞具有一定构型。
B.
参与细胞与外界进行物质转运。
C.
信息转导功能。
D.
细胞识别及细胞免疫等方面的作用。
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举一反三
【简答题】试比较张爱玲与白先勇在创作风格上的异同。
【单选题】Both tea and coffee contain caffeine, an odorless, colorless ______ that is soluble in water and in alcohol.
A.
substance
B.
material
C.
matter
D.
object
【单选题】Which of the following can NOT be inferred from the passage?
A.
China developed advanced technology in printing long before any other country in the world.
B.
More people read newspapers in English than in any other languages.
C.
Japan is the country where people read more newspapers.
D.
Newspapers have developed quickly in the U. S. since the beginning of the 18th century.
【简答题】比较白先勇与张爱玲在创作风格上的异同。
【单选题】Sulfuric acid is a ______．
A.
Clear syrupy liquid with no odor
B.
Colorless-to-brown liquid with a choking odor when hot
C.
Colorless liquid with a pleasant fruity odor
D.
Whitish liquid with a faint，pleasant odor
【单选题】Predict the phenotypic ratio of the F 2 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B .
A.
3 colored : 1 colorless
B.
9 colored : 7 colorless
C.
9 colorless : 7 colored
D.
15 colorless : 1 colored
【单选题】According to the passage, which of the following is TRUE?
A.
Modern humans, Neandertals and Denisovans lived completely separated.
B.
Denisovans and modern humans were more closely related.
C.
Modern humans and Neandertals were more closely related.
D.
There were exchanges between Denisovans and modern humans.
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