the Great Green Wall,we have a good harvest t...

　　　 the Great Green Wall,we have a good harvest this year.

A. According to

B. Thanks for

C. Thanks to

九年级英语单项填空中等难度题查看答案及解析

— This photo makes me think of ________ trip to the Great Wall last year.

— Yeah, we had a great time there.

A. a B. an C. the D. /

九年级英语单选题中等难度题查看答案及解析

（题文）(2017·浙江温州· 1)—This photo makes me think of ________ trip to the Great Wall last year.

—Yeah，we had a great time there.

A. a　　 B. an

C. the　　 D. /

九年级英语单选题中等难度题查看答案及解析

—______ go to the Great Wall this Sunday?

—I’m afraid it is not a good idea. Many of us have been there.

九年级英语单项填空中等难度题查看答案及解析

In 2000, we ____ to the Great Wall and had a good time there.

A．go               B．went             C．will go            D．have gone

九年级英语单项填空中等难度题查看答案及解析

We will build another new Great Green Wall________ the northern part of China.

A. among　　　　　 B. across　　　　 C. through　　　　 D. between

九年级英语单项填空简单题查看答案及解析

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.

九年级英语阅读理解困难题查看答案及解析

As we all know, many travellers visit the Great Wall every year.（改为被动语态）

As we all know, the Great Wall _________ _________ by many travellers every year.

九年级英语改写句子简单题查看答案及解析

_____ we have built “the Green Wall’, _____we still need to work hard to protect our environment.

A. Although ;but　 B. Although ;\

C.Since ;so　 　　 D.Since ;but

九年级英语单项填空中等难度题查看答案及解析

–Did the teacher tell you _____ this afternoon?

–Yes, we will go to visit the Great Wall.

A. to go where　　 B. how to do　　 C. what to do　　 D. to do what

九年级英语单选题中等难度题查看答案及解析