An is a short film on television or short article on radio that is intended to persuade people to buy something.A. argument B. announcement C. advertisement 题目和参考答案——青夏教育精英家教网—

题目内容

An __________ is a short film on television or short article on radio that is intended to persuade people to buy something.

A. argument B. announcement C. advertisement

练习册系列答案

相关题目

At school, we are taught _______ knowledge _____how to behave well.

A.neither ,or B. either, or

C.not only, but also D. not, but

—Oh, my god. I have ___________ 2 kg this month .

—Don’t worry. It’s normal for a growing girl.

A. put up B. put off C. put on D. put down

Sometimes we wish that we could have more time. The good news is that this year will be longer than the previous! Although don’t get excited just yet, because if you blink (眨眼), you may just miss it. That’s because 2015 will be one second longer than 2014 －also known as a leap second (闰秒). And surprisingly, they are pretty common. But why do we need them?

Over the centuries, Earth has been slowing down. This means that we must keep changing our clocks to keep in step with Earth’s time. We’ve all heard of leap years. Our calendars hold 365 days in a year. Yet Earth takes slightly longer to orbit the sun. So we save this time and every 4 years we have an extra day in February.

As for the leap seconds, the International Earth Rotation Service (IERS) manages the global time, known as the atomic time(原子钟时间). This is the timekeeping that’s used for every single country.

To keep up with Earth’s time, they add a second every now and then. They’ve been doing this since 1972. And this year will be the 26th second they’ve added!

It’ll be added just before 8:00 a.m. on July 1 Beijing time. So you will see 7:59:60 on July 1.

Although adding a second sounds harmless, it can have negative effects. In 2012 when a leap second was added, it caused problems for companies like social networking sites Reddit and LinkedIn. As they weren’t prepared for the change, it caused their computers to record errors.

1.Why does a leap second have to be added in some years?

A. Because this year is shorter than the previous one. B. Because we need to have more time.

C. Because the Earth is slowing down. D. Because it can help make a leap year.

2.In a leap year, there is an extra day in_____.

A. January B. February C. March D. December

3.In order to keep up with Earth’s time, how many seconds have been added until last year?

A. 43 B. 42 C. 26 D. 25

4.What’s the negative effect of adding a leap second?

A. It makes the day longer than the previous one. B. It causes some recording errors for companies.

C. It makes people stay up late. D. It does harm to people’s health.

---I’ll go back to visit my parents this weekend. I haven’t seen them for a long time.

---Really? Please __________ me to your parents!

A. remember B. tell C. bring

My win at chess raised my spirits a little.

A. gave me a hand B. cheered me up C. let me down

Last Wednesday night, a young lady was attacked in the street. It 1. (happen) at around 8:00 p.m. Some people heard a shout from the lady. When people got there, the lady2. (lie) on the ground, crying. It's said that the lady was a nurse in a hospital. She was on her way back home from work at that time. Suddenly a strong man ran to her and shouted, " 3.(give) me all your belongings(所带的东西), or I4. (kill) you." She had to give all her money to the man.Luckily the lady5.(not hurt). Now, the police 6. (search)for the robber.

He was about to tell me the secret someone hit him on the head.

A. as B. until C. because D. when

---Could you tell me some information about the hotels in your city？

---Why not ______ on the Internet？

A. look for it B. to look for it

C. look it up D. to look it up

试题分类