下表为某个两季水库管理员记录的水库一周内的水位变化情况，警戒_爱下问搜题

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问题解答题

下表为某个两季水库管理员记录的水库一周内的水位变化情况，警戒水位为150m．

星期	一	二	三	四	五	六	日
水位变化/m	+0.38	+0.25	+0.54	+0.13	-0.45	+0.36	-0.19

注：正数表示比前一天水位上升，负数表示比前一天水位下降．
（1）本周哪一天水位最高？有多少米？
（2）如果水位超出警戒水位0.6米就要放水，那么本周应在哪几天放水？（放出后需保证最大的储水量）．

答案

（1）周四水位最高为（+0.38+0.25+0.54+0.13）+150=151.3米；

（2）周二超警戒水位：0.38+0.25=0.63＞0.6，

又∵周二至周四水位一直上涨，

∴周二，周三，周四放水，

周五水位：+0.38+0.25+0.54+0.13-0.45=0.85＞0.6，

周六+0.38+0.25+0.54+0.13-0.45+0.36=1.21＞0.6，

周日：1.21-0.19=1.02＞0.6，

∴从周二开始至周日一直放水．

选择题

鼻腔能使吸入的空气变得湿润、清洁和温暖，与此功能无关的结构是 [ ]

A．鼻粘膜能分泌粘液

B．鼻粘膜内有嗅细胞

C．鼻腔内有鼻毛

D．鼻腔粘膜内有丰富的毛细血管

填空题

According to historical records，the first (1) Olympic Games can be traced back to 776 BC.They (2) dedicated to the Olympian gods and were staged on the (3) plains of Olympia.They continued for nearly 12 centuries， (4) Emperor Theodosius decreed in 393 A.D.that aU such"pagan cults" (5) banned.
The oldest myth which concerns the beginning of the (6) Games is that of Idaios Daktylos Herakles.According to other (7) ，Zeus，the father of humanity，fought and defeated Cronus in a (8) for the throne of the gods.Finally，the well-known (9) Herakles is mentioned who staged games in Olympia in honour (10) Zeus,because the latter had helped him conquer Elis when (11) went to war against Augeas.
Through the 12 centuries of (12) Olympic Games，many wonderful athletes competed in the stadium and (13) hippodrome of ancient Olympia’s sacred area，moving the crowds with (14) great achievements.Although mortal，their Olympic victories immortalised them.Of (15) best athletes who left their mark on the sacred vallev (16) Olympia，some surpassed all limits and became legends by winning (17) successive Olympic Games and remaining at the forefront of their (18) for more than a decade.
The ancient Olympic Games were (19) a one.day event until 684 BC.when they were extended (20) three days.In the 5th century B.C.，the Games were extended again to cover five days.