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【单选题】
II. Choose the best topic sentence from the groups blow.A.
A breakthrough in one of these areas will hopefully provide a means of relieving both the overstretched oil market and the environment.
B.
Researchers in the automobile industry are experimenting with different types of engines and fuels as alternatives to the conventional gasoline engines.
C.
One new type of engine, which burns diesel oil instead of gasoline, has been available for several years.
D.
.Finally, several automobile manufacturers are experimenting with methanol, which is a mixture of gasoline and methyl alcohol, as an automobile fuel.
E.
A further type is the gas turbine engine, which can use fuels made from gasoline, diesel oil, kerosene and other petroleum distillates.
F.
The increasing depletion of oil reserves, along with environmental concerns, have prompted some radical developments in car design over the past few years.
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【简答题】（ ）是索赔处理的最主要依据。
【简答题】____ 和____坐在天堂那针毯般的三脚凳上,酒从能装一品脱的大缸子里洒了出来,朗朗发出夹着拉丁文的笑声。
【多选题】生物碱的UV光谱与结构骨架的关系包括( )
A.
发色团为生物碱母体的整体结构部分
B.
发色团为生物碱母体的主体结构部分
C.
发色团为生物碱母体的非主体结构部分
D.
与结构无关，主要受溶液pH影响
E.
与结构中的助色团种类、数量、位置等有关。
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