When we start gazing into the night sky with ...

When we start gazing into the night sky with a telescope, soon we’ll be astonished by the realization _______ we and our world are part of this giant system.

A. which            B. whether          C. that             D. as

高三英语单项填空中等难度题查看答案及解析

When I lived with my roommates in the university, we ________ often talk into the night.

A．might　　　　　　　　     B．could

C．should　　　　　　　　     D．would

高三英语单项填空中等难度题查看答案及解析

______ when we passed by its nest.

A. Up into the blue sky did the bird fly       B. Up into the blue sky flew the bird

C. Up into the blue sky the bird flew          D. Flew up into the blue sky the bird

高三英语单项填空中等难度题查看答案及解析

Have you always wanted to discover the night sky but just don't know where to start?If so,then Back Garden Astronomy SkyatMight , Week is for you!

Launching at the start of March,this new beginner's guide from BBC Sky at Night Magazine will introduce the wonders of　 Earth's constant companion in space,the Moon,in easy-to-do, nightly observing instalments.

Just sign up and each day from Monday 2 to Monday 9 March we'll send you a no-nonsense email newsletter that will help you discover the wonders of our planet's natural satellite.We'll show you how to judge the Moon's movement across the sky,and introduce you to some of the most spellbinding sights on its surface.

We'll guide you to the Moon's most dramatic craters and seas,allowing you to discover for　 yourself the rugged locations that attracted the Apollo astronauts.

Each day during Back Garden Astronomy Week you'll also get essential observing tips and a fascinating insight into the Moon-explaining everything from what's behind its ever-changing phases to how old we think it is.

Sign up today to start your journey of discovery and we'll send you a FREE 62-page digital　 starter pack including a Guide to the Moon before Back Garden Astronomy Week starts!

SIGN UP TODAY!

Visit www.skyatnightmagazine.com/backgarden to sign up in a few easy steps.

1.Who is the Back Garden Astronomy Week intended for?

A.Researchers studying the universe.

B.Anyone interested in space.

C.Teenagers interested in the Moon.

D.New beginners interested in the Moon.

2.After signing up,what can you receive from this project before Monday 2?

A.Essential observing tips.

B.A free Guide to the Moon.

C.A no-nonsense email newsletter.

D.A chargeable digital starter pack.

3.Where can you most probably read this passage?

A.On a website.

B.On a university bulletin board.

C.In a text book.

D.In a travel guide book.

高三英语阅读理解中等难度题查看答案及解析

Upon into the blue sky ______ when we passed by its nest.　　

A. did the bird fly　　　　　　　　　 B. flew the bird　　 　　　　　　　　　 C. the bird flew 　　　　　　　　　 　　 D. had the bird flown

高三英语单项填空中等难度题查看答案及解析

________ for a whole night, we still couldn't agree on when to start and where to go for the holiday.

A．Discussed　     B．Having discussed

C．Discussing　     D．Being discussed

高三英语单项填空中等难度题查看答案及解析

When Geoff Marcy was 14, his parents bought him a telescope. Every night, he would go onto the roof outside his window to see the wonders of the sky.

“What excited me most was whether there were planets in other solar systems where life might exist,” he says. “I decided to try to find planets orbiting other stars like our Sun.”

And he did. “My fellow researcher, Paul Butler, and I found our first planet in 1995,” Dr. Marcy says. “We worked for ten years without finding anything! But we stuck with it and our patience paid off.”

Since then, the two scientists have discovered 65 of the more than 100 planets found orbiting other stars. Dr. Marcy and Dr. Butler also spotted the first “family” of three planets. In June 2002 they announced another discovery: a Jupiter-like planet orbiting star 55Cancri.

At first, the two researchers found only planets that orbit close to stars. Recently, the scientists found planets farther out. The planet orbiting 55Cancri is a major breakthrough: it is the first sighting of a large gas planet about same distance from the star as Jupiter is from the Sun.

Why is this important ? Scientists think that life on Earth may exist because of two special features in our solar system. The first is Jupiter.

“Because it’s so big, Jupiter pulls comets and asteroids(小行星), or they all come and hit the Earth.” Dr. Marcy explains. “Without Jupiter , life on Earth would likely have been destroyed.”

A second feature is that Earth is a rocky planet where liquid water, which is necessary for life , can exist. Unlike gas planets, rocky planets like Earth have surfaces where water can gather in pools and seas, which may support life. A huge space exists between the Jupiter-like planet and two other planets that lie close to 55Cancri. Is there an Earth-like planet in the space, too small for us to notice? If so, says Dr. Marcy, “We would have two striking similarities to our solar system: a Jupiter-like planet and an Earth-like planet. And there may be life!”

1.What can we learn about Dr. Marcy from the passage?

A. He is fond of watching Jupiter.

B. He is from a scientist family.

C. He dislikes working with Paul Butler.

D. He is interested in finding life in outer space.

2.Which of the following is true of the recent discovery?

A. The planet is not as protective as Jupiter.

B. The planet is close to star 55Cancri.

C. The planet proves to be a gas planet.

D. The planet is as large as Jupiter.

3.Dr. Marcy and Dr. Butler began to find new planets in ____.

A.1995       B.1985      C.2002       D.1981

4.Dr. Marcy thinks that life may exist in the 55Cancri system because ____.

A. he has found the system similar to the solar system.

B. he has discovered an Earth-like planet there.

C. he has discovered a rocky planet there.

D. he has found signs of life in the system

5.“But we stuck with it”( in Paragraph 3) means ____.

A. they felt discouraged               B. they carried on with it

C. they failed in their attempt          D. they made some progress

高三英语阅读理解中等难度题查看答案及解析

This story starts with my two kids. We were hiking in the Oakland woods when my daughter noticed some plastic litter in a creek. She looked at me and said, "Daddy? That doesn’t go there”.

When she said that, it reminded me of my summer camp. On the morning of that camping day, right before they’d let our anxious parents come through the gates, our camp director would say Quick! Everyone pick up five pieces of litter, "We got one hundred kids each picking up five pieces, and pretty soon, we got a much cleaner camp. So I thought, why not apply that crowdsourced cleanup model to the entire planet? And that was the inspiration for Literati. The goal is to create a litter-free world. Let me show you how it started. I took a picture of a cigarette using Instagram.

Then I took another photo. and another. And at the end of a few days, I had 50 photos on my hone and I had picked up each piece, and I realized that I was keeping a record of the positive impact I was having on the planet. That’s 50 fewer things you might see, or you might step on, or some bird might eat. So I started telling people what I was doing, and they started participating. I realized that Litterati was more than just pretty pictures; we were becoming a community that was collecting data. Each photo tells a story. It tells us who picked up what, a geo-tag tells us where and a time stamp tells us when. Gradually, the community grew.

Litter —it's blending into the back ground of our lives. But what if we brought it to the fore front? What if we understood exactly what was on our streets, our sidewalks and our school yards?

How might we use that data to make a difference?

1.From the text we can tell Litterati is probably_______

A. a hi-tech company　　 B. a reading software

C. a non-profit app　　 D. a well-known magazine

2.What does the author suggest by mentioning the inspiration from the camping director?

A. Many hands make light work.　　 B. A good beginning is half done

C. Birds of a feather flock together.　　 D. A candle lights others and consumes itself.

3.What are the paragraphs following the text likely to deal with?

A. To present the reasons for so much litter

B. To appeal to people to use garbage classification.

C. To tell readers what measures to take to handle litter

D. To show more statistics about what they have done with litter

高三英语阅读理解中等难度题查看答案及解析

Once I was playing in the woods when the sky started to turn dark and the wind started to blow. I saw a big black cloud　 1.(move) towards me. Suddenly, I felt the rain hitting my face! Actually, it was pouring! Then I saw lightning in the sky. And later, BOOM!!! A loud clap of thunder! Then I saw a little old hut and ran inside. It smelled awful and the walls were shaking, but it was　 2.(good) than nothing! Outside, the wind was howling and things were flying around. I just stood in the corner, cold and scared.　　 3.(lucky) my dad came and found me. I was safe!

高三英语语法填空简单题查看答案及解析

We humans love to stare into our smart devices. We gaze for hours—about 10 hours and 39 minutes a day—at our computers, smartphones, tablets and televisions. Is all this staring bad for us? It might be, mainly because as we stare at our devices we are exposing ourselves to blue light.

Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy. While it’s true that light can damage our eyes under certain circumstances, there’s no scientific evidence suggesting that blue light is harmful to our eyes. But many people still think it is, which is why blue—light—blocking glasses are so popular. So, do the glasses work?

“Everyone is very concerned that blue light may be causing damage to the eye, but there’s no evidence that it may be causing serious damage,” Dr.Rahul Khurana, a clinical spokesman, told Business Insider.

Blue light exposure is nothing new. In fact, the sun is the largest source of blue light. Moreover, blue light is also present in LED light. But if blue light isn’t harmful, then why are we constantly rubbing our eyes when we’re looking at our screens? The answer is eyestrain(眼疲劳). More than 60 percent of people experience eye problems associated with digital eyestrain. And blue light, it seems isn’t the cause. Instead, our eyes are so strained because most of us blink less when we stare at our digital devices. So, if eyestrain is the real issue, blue-light-blocking glasses are probably of little use.

1.What do we know about blue light?

A.It has the shortest wavelength.

B.It’s a kind of nuclear radiation.

C.It consumes a great deal of energy.

D.It may come from electronic devices.

2.What causes the popularity of blue-light-blocking glasses?

A.Evidence of their benefits to eyes.

B.Widespread use of smart devices.

C.Belief in blue light’s harmful effect.

D.Scientific understanding of blue light.

3.What can be inferred from Paragraph 4?

A.Rubbing eyes makes people strained.

B.Blue light exposure is hardly avoidable.

C.Blue light may connect with tired eyes.

D.Eye problems are not easy to deal with.

4.According to the text, wearing blue-light-blocking glasses may be _______.

A.useless B.harmful C.tiring D.beneficial

高三英语阅读理解中等难度题查看答案及解析