题目内容
【题目】两条相对的经线组成一个经线圈,可以把地球分为两个半球。请根据所学知识,回答下列各题
【1】下列各组经线中,两条经线不相对的一组是
A.20°W和160°E
B.90°W和90°E
C.0°和180°
D.30°E和60°E
【2】下列4组经线圈中,作为东、西半球分界线的是
A.20°W和160°E
B.90°W和90°E
C.0°和180°
D.30°E和60°E
【答案】
【1】D
【2】A
【解析】
试题分析:
【1】在地球仪上,经线是连接南北两极并且与纬线垂直相交的半圆,经度的划分是以0°经线为界,向东向西各分了180°,向东的180°称东经,用符号“E”表示,向西的180°称西经,用符号“W”表示;经线的形状是半圆,每条经线与它相对的经线组成一个经线圈,其度数和为180°,东西经度相反;
【2】国际上习惯用西经20°(写作20°W)和东经160°(写作160°E)这两条经线组成的经线圈,作为划分东西半球的界线,因为这个经线圈基本上是从海洋通过,避免了以0°和180°经线划界,将欧洲和非洲的一些国家分隔在两个半球上.
【题目】任务型阅读
One day Mrs. Thomas goes shopping(购物). She goes into a big supermarket. She buys many things. She buys two hamburgers. They are 2 dollars each. She buys some French fries, l dollar. She buys some fruit, too. Bananas are 2 dollars and strawberries are 4 dollars. She also buys a T—shirt, socks, shorts, a dress, a hat and a bag. The T-shirt is 4 dollars. The socks are 1 dollar, and the shorts are 10 dollars. The dress is 7 dollars. The hat is 3 dollars and the bag is 6 dollars.
根据短文内容完成表格
Things | How much |
Food | dollars |
Fruit | dollars |
T—shirt, shorts and dress | dollars |
Socks and hat | dollars |
Bag | dollars |