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问题 填空题

列表比较经线和纬线的特点（指示方向、长度是否相等、0°线为哪一条、经度和纬度怎样划分、是全圆还是半圆）

答案

在地球仪表面，连接南北两极并垂直于纬线的弧线，叫做经线．经线指示南北方向，各条经线的长度相等，0°经线即本初子午线．纬线是圆圈形的，纬线的长度不相等，纬线指示东西方向，0°纬线即赤道．

故答案为：

经线纬线
0°线名称本初子午线赤道
形状半圆圆圈
长度相等不相等
指示方向南北东西
度数划分以本初子午线为起始点，向东向西各分了180°以赤道为起始点，向南向北各分了90°

问答题

　　小王、小张和小李正在进行一项小发明制作，但在关键部位却卡了壳。小王说：“要是小郭来了多好，这个部位他准行。真实‘万事俱备，只欠东风。’”这时恰好小郭来了。小张说：“说曹操，曹操到。”小郭问议论他什么，小李说：“我们准备请你吃肯德基。”小郭说：“这不是醉翁之意不在酒吗”。

（1）“万事俱备，只欠东风”是根据《三国演义》______________（战役）中“周瑜定计火攻曹操”的故事演化而来的。小王说的“只欠东风”意思_______________

（2）小张的话表达的是什么意思？

__________________________________

（3）“醉翁之意不在酒”语出欧阳修的《醉翁亭记》，原意是醉翁的情趣不在喝酒上，小郭的话意思是__________________________________
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完形填空

根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限一词。

Air is very important to everything that lives. But the air we breathe is g  小题1:  dirty. People all over the world are looking for w 小题2:  to make it clean again.

Have you ever watched the smoke from chimneys(烟囱) r 小题3:  high in the air? Have you s  小题4:___ the smoke from cars and trucks on roads or the smoke from planes? The smoke is h 小题5:  to everyone, especially old people and children. If we want to keep well and strong, we need to breathe f 小题6:  air.

With more and m  小题7:  factories everywhere and more and more cars, trucks and planes, it is getting harder and harder to do with the air p 小题8:  .

Scientists have a小题9:  found ways to stop or slow down some of the things that make the air dirty. They will not stop working u 小题10: we have clean air again.
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