Many scientists have ________ that we will face more serious environmental problems if we can’t come up with solutions to deal with pollution.
A. looked out B. called out C. pointed out
九年级英语单选题中等难度题
Many scientists have ________ that we will face more serious environmental problems if we can’t come up with solutions to deal with pollution.
A. looked out B. called out C. pointed out
九年级英语单选题中等难度题查看答案及解析
Many people believe we will face serious problems ______we take action to change the way we live.
A. but B. though C. unless D. until
九年级英语单项填空中等难度题查看答案及解析
We may have serious problem in the project，but we will face challenge bravely.
A. a; a B. /; the C. the; a D. a; the
九年级英语单项填空中等难度题查看答案及解析
1.Many people believe that we will be cared for by _________(机器人) in the future.
2.Scientists are trying hard to _________(开发) plants that can grow on Mars.
3.A number of goods made in China have been up to ___________(标准).
4.__________(比较) with buying presents from shops, more and more people prefer DIY.
5.Britain is behind Japan in developing modern_____________________ (技术).
九年级英语单词拼写中等难度题查看答案及解析
Many people think that if more time is spent, more work will be done. So students have to the whole day doing homework except during the three meals. It is not to see students lost in a sea of homework both at school and at home.
Modern students usually have many . They love music, sports, reading and watching TV. A two-day weekend gives them time to do what they . However, there’s much homework to do, so they usually don’t want to do it Sunday night. In such a short time, students may finish it carelessly. The badly-done weekend homework makes teachers .
Things always get without the right ideas. Too much homework makes students interests in learning. A horse runs faster after a , but for students only rest is not enough. We should this situation and try to give students more time to relax.
1.A. buy B. get C. spend D. take
2.A. modern B. mad C. sad D. strange
3.A. sports B. hobbies C. books D. friends
4.A. like B. have C. tell D. hate
5.A. in B. as C. until D. on
6.A. comfortable B. happy C. angry D. relaxed
7.A. worse B. easy C. better D. wonderful
8.A. have B. get C. forget D. lose
9.A. meal B. moment C. minute D. rest
10.A. tell B. change C. keep D. hear
九年级英语完型填空中等难度题查看答案及解析
Scientists and experts warn that Australia’s fire season has grown longer and more serious ________ climate (气候) change. The country is facing a dangerous new normal.
A.as well as B.because of C.rather than
九年级英语单选题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
We should plant more trees so that animals will have more forests .
A. to live B. to live in C. live D. live in
九年级英语单选题简单题查看答案及解析
–Do you know ?
–They will help us do lots of work so that we will have more free time
A. how robots will change our lives B. how will robots change our lives
C. where we can buy robots D. where can we buy robots
九年级英语单项填空中等难度题查看答案及解析
1.It is said that students in Hong Kong have much k_________ about many things.
2.We should pay more a_________ to the problems caused by air pollution.
3.Next week is my grandpa’s n__________ birthday, we’re having a big party.
4.Which country has the l________ population, China, Indian or Russia?
5.Miss Yang asked me to improve my spelling and p_________.
6.Don’t open your door for a s______ when you’re alone at home.
7.The man who s________ the things at a shop was caught yesterday.
8.The head teacher w_______ the boy not to be late again yesterday morning.
9.Jennifer is five years old now and she can dress h _____ every morning.
10.My brother looked t _______ my things yesterday and took my new CDs.
九年级英语单词拼写困难题查看答案及解析