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【简答题】
蒙脱 1 介质中形成的,主要由火山灰及凝灰岩分解而成。在晶体结构上,蒙脱一种典型的以阳离子以及水分子作为层间物的 2 : 1 型粘土矿物。在被埋藏后,随温度和压力的增加,层间逐渐被释放出来,造成层间塌陷,形成 2 混层,进而逐渐向伊利石转化。温度在蒙脱石的转化过程中起着重要的作用,当温度在 80~110°C 时,蒙脱石转变为伊利脱层矿物,当温度升高至 130~180°C 时,转变为 3 。除温度外,层间溶液的化学成分也起着至关重要的作用,如果溶液富 K + 离子,就可以在一定程度上降低转化的温度;如果溶液富 Fe 2+ 、 Mg 2+ ,蒙脱转化为 4 混层矿物,最终转变为 5 。 从“ 伊利石、高岭石、 蒙脱石 — 绿泥石、 绿泥石、 伊利石 — 蒙脱石、 碱性 、酸性”中选择恰当词语填空。
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举一反三
【简答题】生物必然进行新陈代谢，所以，并非生物必然不进行新陈代谢。
【单选题】The author quotes the example of Straus in Para. 4 to show
A.
the whole process of applying for the non-GMO certification.
B.
the great efforts for getting the certified non-GMO certification.
C.
the efforts Straus making to earn the non-GMO label.
D.
the great efforts Straus making to get certified organic.
【单选题】The author mentions the example of 'backpacks'(Line 4, Para. 2) to show the importance of______.
A.
pleasing the young as well as the old
B.
increasing usage among students
C.
exploring new market sections
D.
serving both military and civil needs
【简答题】新陈代谢(metabolism)
【单选题】下列关于新陈代谢的叙述，错误的是 [ ]
A.
新陈代谢包括合成代谢和分解代谢
B.
先有物质合成，后有物质分解
C.
人体内时刻以新合成的物质取代原有的物质
D.
物质代谢总是伴随着能量代谢
【单选题】What does the example of New Jersey (Para. 4) illustrate?
A.
Schools in rich districts are usually choosy.
C.
Official sources are careful on the success of AC. C. New Jersey has more need for teachers than elsewhere.
D.
AC has turned out good teachers for schools.
【单选题】The author gives an example of a woman in Para. 5. What kind of relationship between the hostess and the Roomba does that example support?
A.
A woman and her secret lover.
B.
A mother and a competent helper.
C.
The master and the household appliance.
【单选题】What does the example of New Jersey (Para. 4) illustrate?
A.
Schools in rich districts are usually choosy.
B.
Official sources are careful on the success of A C.
C.
New Jersey has more need for teachers than elsewhere.
D.
AC has turned out good teachers for schools
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