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问题 单项选择题

我国境内目前已确定的最早人类是( )。

A．蓝田猿人
B．北京人
C．元谋人
D．山顶洞人

答案

参考答案：C

解析： 元谋人生活在距今约170万年，是我国境内目前已确定的最早人类。蓝田猿人距今约80万年，北京人距今约有70万年至约20万年，山顶洞人距今约3万年。故本题正确答案为C。

单项选择题

啤酒发酵过程主要物质变化，叙述错误的是（）

A.在啤酒发酵过程中，可发酵糖约有96%发酵为乙醇和CO2，是代谢的主产物

B.在正常的发酵过程中，麦汁中含氮物约下降1/3，主要是约50%的氨基酸和低分子肽为酵母所同化

C.啤酒中的所有高级醇是在主发酵期间酵母繁殖过程中形成的

D.啤酒中的酯含量很少，但对啤酒风味影响很大，且酯类大都在主发酵期间形成
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完形填空

I often wondered why the people of Pompeii did not run away before the volcano erupted. As it turns out, they didn’t know what a volcano was. In fact, the Romans did not even have a word for “volcano”. 小题1:They had no idea that a volcano would destroy them. Starting from 20 August AD 79, there were some earthquakes near the volcano. 小题2:然而，没有一个人很注意这些. Then, on 24 August, the mountain explored, pouring out a cloud of ash. It was also moving quite fast. Most of the human remains from Pompeii have been found on the roads away from the city. 小题3:The people were fleeing the city for their lives. However, they could not get away fast enough, 小题4:so they were buried beneath the ash. A famous Roman scholar happened to be on a boat nearby when all of this happened, so he went to the area to see what was going on. Even he didn’t know what a volcano was. 小题5:不幸的是他也死于这场灾难中.
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