题目内容
【题目】下面有关经线和纬线的说法正确的是（ ）
A.每条经线的长度都是相等的B.经线与经线之间是相互平行的
C.经线和纬线的形状都是一个圆D.每条纬线的长度都是相等的
【答案】A
【解析】
经线是连接南北两极并同纬线垂直相交的半圆，也称子午线，经线指示南北方向；所有经线都呈半圆状且长度相等；两条正相对的经线形成一个经线圈；任何一个经线圈都能把地球平分为两个半球。纬线是在地球仪上，顺着东西方向，环绕地球仪一周的圆圈。所有的纬线都相互平行，并与经线垂直，纬线指示东西方向。纬线圈的大小不等，赤道为最大的纬线圈，从赤道向两极纬线圈逐渐缩小，到南、北两极缩小为点。
经线是连接南北两极的半圆，每条经线的长度都是相等的，故A说法正确；经线与经线之间是垂直相交的，故B说法错误；经线的形状为半圆，纬线的形状是圆圈，故C说法正确；纬线的长度都不相等，赤道是最长的纬线，向两极逐渐变短，到两极成为两点，故D说法错误。故选A
【题目】 In our city, there is a big zoo. There are a lot of animals in it.
Mona is an Australian koala. She is seven years old. She is very cute. She likes sleeping in the day. But at night she gets up and eats leaves. Mona doesn’t drink(喝) water for months. But she is healthy, because she can get water from the leaves. |
The lion’s name is Gerry. He is ugly. He is from South Africa. Meat is his favorite food. Gerry is very lazy. He sleeps and relaxes for 20 hours every day. Today is Gerry’s eighth birthday. The workers in the zoo are having a birthday party for him. |
This is a big elephant. His name is Johnny. He is from India. He’s eleven years old. He has bad eyesight(视力). He’s friendly and smart. People can teach him to do something for them. |
Yuanyuan is a cute panda. She is five years old. She’s from China. She is very beautiful, but she’s shy, so please keep quiet. She likes eating bamboos(竹子) and drinking water. She relaxes about 10 hours every day. |
阅读上面的短文并回答问题。
【1】How old is Gerry?
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【2】Which of these animals can’t see things very well?
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【3】Which of these animals can help people to do things?
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【4】How many countries do these animals come from?
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【5】Which of these animals is the youngest(年龄最小)?
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