问题 问答题 简答题

读地球公转示意图完成下列内容:

(1)在图中标出地球公转的方向.

(2)太阳直射赤道时,其节气是______或______.

(3)夏至日,太阳直射______;此时,北极圈以北地区出现______现象.

(4)冬至日,太阳直射______;此时,学校所在地正午太阳高度在一年中最______,白昼最______.

(5)对比地球的自转与公转运动,填写下表

答案

参考答案:

(1)

(2)春分日;秋分日;

(3)北回归线;极昼;

(4)南回归线;小;短;

(5)

解析:

分析:

(1)地球绕地轴不停转动,叫地球自转.地球自转的方向是自西向东,自转的周期是一天.地球自转产生的现象是昼夜交替和时间差异.

(2)地球在自转的同时还要绕着太阳转动叫地球公转,地球公转的方向是自西向东,公转的周期是一年.地球围绕太阳公转产生了四季变化、正午太阳高度的变化、昼夜长短的变化等.

解答:

(1)地球公转的方向是自西向东.

(2)当太阳光线直射赤道时是北半球的春分日或秋分日.

(3)夏至日时,太阳直射的纬线是北回归线,此时,北极圈以北地区出现极昼现象.

(4)我们的学校所在地是山东省,位于北半球.冬至日,太阳直射南回归线,北半球正午太阳高度在一年中最小,白昼最短.

(5)地球绕地轴不停转动,叫地球自转.地球自转的方向是自西向东,自转的周期是一天.地球自转产生的现象是昼夜交替落和时间差异;地球在自转的同时还要绕着太阳转动叫地球公转,地球公转的方向是自西向东,公转的周期是一年.地球围绕太阳公转产生了四季变化、正午太阳高度的变化、昼夜长短的变化等.

阅读理解

Choose the best answer (根据短文内容,选择最恰当的答案)

You probably know you should say “please” and “thank you” at restaurants. You probably know the rules of a library. You know you should respect and be nice to your classmates. But do you have music manners?

Keep It Down! You have to notice the volume of your music. You should not play your music so loud that everyone around you can hear it. Some people might even get angry. Usually, when you play the music loud on an MP3 player, other people can’t hear the words of the song. They just hear a loud sound. No one wants to listen to this. Very loud music can also be bad for your ears. So even if you are alone when listening to our MP3 players, you shouldn’t turn it up too high.

Take Them Off! You need to know when to turn your MP3 off and put it away. Libraries, and schools don’t allow MP3 players. There are other places, like museums, that don’t have rules, but it would be rude to have your MP3 player on. Sometimes, it doesn’t make sense to listen on your MP3 player at event. Why would you listen to music at a play, a movie or a sporting event? You would miss what is going on and others would wonder why you even came.

Take One Out! Once in a while it’s okay just to take out one earphone and not other. Imagine you are listening on your MP3 player when someone asks you the way. It would not be rude to take out one earphone, tell him the way, and put back the earphone and continue listening. You can also do this when you order food at a fast-food restaurant or when you answer the telephone and it’s not for you.

It’s Your Choice! There are times when you need to decide what is best. For example, some people can listen to music on their MP3 players when reading books, while others think it is disturbing. In cases like this, you need to do what seems right for you.

小题1:The underlined word “volume” in Paragraph Two probably means “_______”

A.the type of music

B.the amount of a sound

C.the length of a song

D.the color of an MP3 player小题2:No one wants to listen to _____________ from others’ MP3 players.

A.a loud sound

B.sad stories

C.a long movie

D.the words of a song小题3:We should turn down the music when we are alone because loud music ________.

A.is not enjoyable

B.makes us tired

C.is bad for MP3 players

D.hurts our ears小题4:If we listen to our MP3 player at a play, ______________________.

A.the theatre won’t allow it

B.the actors will get angry

C.others won’t hear the play well

D.we will miss part of the play小题5:We can take one earphone out when we _______________________.

A.show others the way

B.talk to friends on the phone

C.watch a sporting event

D.have dinner with our parents小题6:It’s all right to use our MP3 player in _________________.

A.school

B.libraries

C.restaurants

D.museums小题7:What can be the best title of this passage? _________________

A.Music lovers

B.Music manners

C.MP3 players

D.MP3 earphones

选择题