What time is it? That's a very good question! From morning to night, clocks help us to plan our day. They tell us when things begin and when they end.

Before clock, people tell time by watching the sun move across the sky. They started work when the sun came up in the east. At noon, when the sun was very high, they ate and rested. When the sun disappeared in the west, they went to bed.

Today, we know that the sun doesn’t move around the Earth. As the Earth turns, the sun seems to be moving across the sky. It takes the Earth a day to make one complete turn.

A day is divided into hours, minutes and seconds. There are 24 hours in a day. There are 60 minutes in an hour. How many minutes are there in a day? 24*60=1，440. There are 1,440 minutes in a day.

We measure time by other movements, too. The Earth travels around the sun.It takes the Earth a year to go around the sun once. One year is 12 months, or just over 52 weeks. To be very accurate（準確的），it takes the Earth 365 days，5 hours，49 minutes and 12 seconds to go around the sun.

We divide the Earth into 24 time zones. Each time zone is one hour apart from the next time zone.For example，when it is 10：00 a.m.in Beijing，it is 9：00 p.m. in New York.

Because of the clocks and calendars（日歷），we can measure time very easily.However，it is the movement of the Earth that really allows us to measure time.

1.How did people tell the time before clocks?

A.By looking at the sky. B.By watching the sun.

C.By looking at the calendar. D.By watching the moon.

2.Which of the following statement is TRUE?

A.There are 1,440 minutes in a week.

B.It takes the Earth a day to make a turn itself.

C.When the sun is high up in the sky, people wake up.

D.It takes the Earth less than 365 days to go around the sun.

3.When we are having lunch at school, what are children in New York probably doing?

A.Having lunch B.Having dinner

C.studying at school. D.Sleeping at home.

4.Where the passage probably from ?

A.A magazine B.A poster C.A travel guide. D.A story book.

5.What is the best title of the passage?

A.The movements of the Earth. B.The ways to measure time.

C.The use of clocks. D.Time zones of the world.

練習冊系列答案
相關習題

科目：初中英語 來源：山西省2019-2020學年七年級上學期期末英語試卷 題型：材料作文

書面表達

假如你是陽光中學的一名初一學生John，請根據(jù)下列提示用英語寫一篇短文，介紹你的日常生活和飲食習慣。內(nèi)容包括以下幾點:

1. 學校生活：每天8節(jié)課，放學后和同學玩游戲。

2. 一日三餐：早飯(面包、牛奶…)，午飯(米飯…)，晚飯(魚，面條…)。

3. 列舉保持健康的做法，比如：吃健康的食物；每天做運動等等。

要求：①句子通順,連貫,書寫工整。
②要點齊全,字數(shù)不少于50詞。

③文中不要出現(xiàn)自己的真實信息,如真實姓名或班級,否則不得分。

Hello, my name is John. I study in Sunshine Middle School.

查看答案和解析>>

科目：初中英語 來源：湖南省常德市2019-2020學年八年級上學期期末英語試卷 題型：完型填空

When I was twenty-eight years old, I left my hometown and went to another city. There I found my first_______.I worked_______ a dentist in a hospital.

It was cloudy yesterday. I got up early, had a breakfast and went to work. When I was _______, it started to rain. I was very sad because I found I _______ to take my umbrella. So I had to run to the _______. When I got there, my clothes were all_________It was getting colder and colder. I _______for about half an hour, but there weren't any buses coming. Just then a car _______ behind me. The woman in the car rolled(搖)down the window and asked if I_______a ride(便車). I remembered my mother told ________not to take rides from strangers（陌生人）.So I said, “No, thanks.”________she still asked me to get into her car. I looked at her________and she looked like a kind woman. So I__________in and she took me all the way to my house. I thanked her and wanted to________ her some money. She refused(拒絕) and left________I could ask for her name.

I was really lucky to meet such a kind woman in the strange city.

1.A.woman B.job C.dentist

2.A.like B.of C.as

3.A.at the station B.at home C.in the hospital

4.A.remembered B.wanted C.forgot

5.A.hospital B.bus stop C.home

6.A.dry B.over C.wet

7.A.cried B.looked C.waited

8.A.stopped B.drove C.went

9.A.came B.bought C.needed

10.A.me B.him C.her

11.A.If B.So C.But

12.A.happily B.carefully C.sadly

13.A.walked B.got C.climbed

14.A.give B.have C.share

15.A.before B.after C.when

查看答案和解析>>

科目：初中英語 來源：江蘇省蘇州市昆山、太倉市2019-2020學年七年級上學期期末校際聯(lián)合英語試卷 題型：單選題

―Mum, this blue coat is very beautiful.

―Yes, but the price is too . Let's have a look at the red one.

A.low B.high C.cheap D.expensive

查看答案和解析>>

科目：初中英語 來源：江蘇省蘇州市昆山、太倉市2019-2020學年七年級上學期期末校際聯(lián)合英語試卷 題型：單選題

How much are cards? I'd like to have .

A.the;it B.the;one C./;one D./;it

查看答案和解析>>

科目：初中英語 來源：廣州海珠區(qū)2019-2020學年七年級上學期期末英語試卷 題型：其他題

第二節(jié) 重音辨別。指出四個選項中重音不同的單詞。

1.A.German B.model C.beauty D.complete

2.A.camera B.problem C.another D.energy

3.A.postcard B.return C.machine D.across

查看答案和解析>>

科目：初中英語 來源：河北省滄州任丘市2019-2020學年七年級上學期期末英語試卷 題型：閱讀單選

根據(jù)表格內(nèi)容,選擇最佳答案。

From: Japan

Name: Kumiko

Age: 14

Looks: A long face, big eyes, long black hair

Favorite color: Pink

Tel: 9657-2315

From: England

Name: Sally

Age: 13

Looks: A round face, a wide mouth, short blond hair

Favorite color: Red

Tel: 9240-5697

From: Canada

Name: Dick

Age: 11

Looks: A big head, small eyes, short brown hair

Favorite color: Yellow

Tel: 9788-6558

1.How old is Kumiko?

A.11. B.12. C.13. D.14.

2.Where is Sally from?

A.England. B.Canada. C.Japan. D.America.

3.Dick’s telephone number is .

A.9657-2315 B.9240-5697 C.9788-6558 D.6788-6559

4.Sally and Dick have .

A.long hair B.short hair C.black hair D.yellow hair

5.Which is RIGHT?

A.Sally’s favorite color is pink. B.Sally and Kumiko look the same.

C.Dick is from the USA. D.Dick likes yellow very much.

查看答案和解析>>

科目：初中英語 來源：北京101中學2019-2020學年八年級上學期期中英語試卷 題型：閱讀單選

My mother only had one eye.I never wanted her to show up at my school.

One day during elementary school, I was terribly ill.My mother came.

“Your mom only has one eye!” yelled some of my classmates.I wished my mother would have just disappeared.

“If you embarrass (使......尷尬) me, why don't you just die?” I shouted at her, taking no notice of the sad look on her face.My mother just handed me some medicine and left without saying anything.

At that time, I didn't think I had hurt her feelings very much.That night I saw my mom crying in her room.Even so, I hated her tears from one eye.I made a decision：I must study hard and leave my mother.

Years later my dream came true.I was quite successful.I never thought of going back to see my “ugly” mother until one day I got a letter.

“My son, I'm sorry I only have one eye.When you were little, you got into an accident and lost your eye.As a mom, I couldn't stand watching you live with only one eye, so I gave you mine.I was never angry with you and I never regretted it because I love you.

I cried out aloud.Only then did I realize how beautiful my mother was!

1.Why didn't the writer want his mom to show up at his school?

A.Because he thought she was ugly. B.Because his mom had a terrible illness.

C.Because his mom couldn't see anything. D.Because his classmates didn't like her.

2.The writer's mom lost one eye because __________.

A.she had a serious car accident B.she used it to save her son's sight

C.she was born with only one eye D.she cried too much

3.What can we infer from the passage?

A.The writer doesn't like his mother now.

B.The mother was very angry with the writer when he shouted at her.

C.The writer lived in the same city as his mother.

D.The writer was very sorry after he knew his mother gave him her eye.

查看答案和解析>>

科目：初中英語 來源：冀教版英語九年級全冊Unit4 Stories and Poems單元測試卷（含聽力） 題型：聽音辯詞

A.safety rules B.city rooms C.tasty noodles

查看答案和解析>>

同步練習冊答案