You can see the stars on a clear night, but i...

You can see the stars on a clear night, but in the daytime they are _____

A. unbelievable                  B. invisible                 C. inaccessible                            D. unavailable

高二英语单项填空简单题查看答案及解析

You can see the stars on a clear night, but in the daytime they are __________.

A. unbelievable      B. invisible          C. inaccessible        D. unavailable

高二英语单项填空简单题查看答案及解析

On a clear night, you can see a sky paced with stars. But you can’t see planets orbiting any of these stars, even with the strongest Earth—based telescopes. Astronomers reported that they discovered seven Earth—sized planets orbiting a nearby star called TRAPPIST – 1 in February. They had to rely on indirect evidence to tell them that the planets are there. By doing some math, they figured out the number of planets and the distance of their orbits.

TRAPPIST – 1 is a red dwarf （红矮星）, much smaller than our sun, but larger than Jupiter (木星). If the sun were the size of a basketball, TRAPPIST – 1would be the size of a gold ball. This star is one of our closest neighbors, just like the moon to the earth in space.

When astronomers using Earth-based telescopes to study TRAPPIST – 1,they noticed that every once in a while, it became slightly dim（昏暗）. They decided that a planet must be passing in front of the star, blocking part of the light. This dimming would come and go as the planet orbited the star, passing alternately (交替地) behind and in front of the star regularly.

By making careful observations, astronomers expected to get a rough idea of the planet’s size from the pattern of dimming light. But the light level changed often and not at evenly spaced (均匀间隔的) times. The astronomers had to conclude they were looking at more than one planet! To get additional data, NASA’s spritzer Space Telescope measured TRAPPIST –1’s brightness nearly continuously for 20 days, catching 34 crossings of planets in front of the star. Sorting through the mess of data, the astronomers found that the innermost planet completes its orbit in 1.5 Earth days, while the outermost planet takes 20 days. Once you know how long it takes each planet to complete an orbit, you can work out how far it is from the star compared with the other planets.

The TRAPPIST – 1 planets are not alone. So far, astronomers have found more than 3,400 planets that orbit other stars.

1.How did astronomers know the number of planets orbiting TRAPPIST –1?

A. They used their eyes.　　 B. They used telescopes.

C. They performed some calculation.　　 D. They made some guess.

2.How does the author introduce TRAPPIST – 1 in paragraph 2?

A. By giving examples.　　 B. By making comparisons.

C. By providing research results.　　 D. By listing some numbers.

3.What probably causes the star TRAPPIST – 1 to be slightly dim?

A. The telescope’s failure.　　 B. The cloud floating around.

C. The star’s moving.　　 D. The passing planets.

4.What’s the main idea of Paragraph 4?

A. The ways to get the information of the planets.

B. The introduction of the planets.

C. The distances of the planets to the star.

D. The astronomers’ effort of exploring TRAPPIST – 1.

高二英语阅读理解中等难度题查看答案及解析

Our room was on the second floor but you could still hear the roar of the ocean and see the stars at night. I used to take long walks along the water. The food in town was wonderful and the people were very friendly. The area was very quiet and peaceful, and fairly deserted.

The last evening of our vacation, however, we all heard strange footsteps following closely behind us as we were walking up to our room in the holiday centre. We turned around and noticed a fairly young man moving very rapidly across the beach and getting closer to us. He was tall and wore a baseball cap. We couldn’t see his face and he was approaching us very rapidly. The man’s actions made my dad very nervous. Dad warned us that we’d better try to make it to our hotel room as quickly as possible. I didn’t like my dad’s voice; I could hear fear in it. It was late and we were all alone. We didn’t have any cell phones on us. I never saw Dad as worried as he was then and I knew that something was terribly wrong. The sense of fear started to overwhelm Mom and me. We had had such a good time in town. Now, the night was rapidly turning into a dangerous situation.

We could hear the man’s footsteps getting closer. Dad’s face was almost pale. The so-called intruder (侵入者) had moved nearer and nearer when all of a sudden, the nearby vending (自动贩卖) machine started going crazy and spitting out cans of soda! The noise actually scared the intruder and he ran out of sight. My parents were shaking, but we all turned around to see who had put money into the vending machine downstairs, and actually saved us, but no one was around at all. Not a soul.

It’s one vacation I will never forget.

1.Where did the author spend her vacation?

A. Near a lake.                            B. At the seaside.

C. In a village.                        D. In a mountain.

2.What does the underlined word “overwhelm” in Paragraph 2 mean?

A. move.            B. impress.            C. control.            D. excite.

3.What helped them get out of the trouble?

A. Their quick action.

B. Other people’s kind help.

C. The young man’s warning.

D. The noise from the vending machine.

高二英语阅读理解中等难度题查看答案及解析

----I can’t see the words on the blackboard clearly.

----Why, your eyes need _____. Perhaps you need ______ glasses.

A. examining; wearing         B. to examine; wearing

C. to be examined; to wear      D. examined; wearing

高二英语单项填空中等难度题查看答案及解析

There are over 100 night clubs in the city, but you don’t often see________that is empty.

高二英语单项填空简单题查看答案及解析

Few laws are so effective that you can see results just days after they take effect. But in the nine days since the federal cigarette tax more than doubled-to $1.01 per pack-smokers have jammed telephone "quit lines" across the country seeking to kick the habit.

This is not a surprise to public health advocates. They've studied the effect of state tax increases for years, finding that smokers, especially teens, are price sensitive. Nor is it a shock to the industry, which fiercely fights every tax increase.

The only wonder is that so many states insist on closing their ears to the message. Tobacco taxes improve public health, they raise money and most particularly, they deter people from taking up the habit as teens, which is when nearly all smokers are addicted. Yet the rate of taxation varies widely.

In Manhattan, for instance, which has the highest tax in the nation, a pack of Marlboro Light Kings cost $10.06 at one drugstore Wednesday. In Charleston, S.C., where the 7-cent-a-pack tax is the lowest in the nation, the price was $4.78.

The influence is obvious.

In New York, high school smoking hit a new low in the latest surveys-13.8%, far below the national average. By comparison, 26% of high school students smoke in Kentucky. Other low-tax states have similarly depressing teen-smoking records.

Hal Rogers, Representative from Kentucky, like those who are against high tobacco taxes, argues that the burden of the tax falls on low-income Americans "who choose to smoke".

That's true. But there is more reason in keeping future generations of low-income workers from getting hooked in the first place. As for today's adults, if the new tax drives them to quit, they will have more to spend on their families, cut their risk of cancer and heart disease and feel better.

1.The text is mainly about 　　　 .

A. the price of cigarettes

B. the rate of teen smoking

C. the effect of tobacco tax increase

D. the differences in tobacco tax rate

2.What does the author think is a surprise?

A. Teen smokers are price sensitive

B. Some states still keep the tobacco tax low

C. Tobacco taxes improve public health

D. Tobacco industry fiercely fights the tax rise

3.Rogers' attitude towards the low-income smokers might be that of 　　　 .

A. tolerance　　 B. unconcern

C. doubt　　 D. sympathy

4.What can we learn from the last paragraph?

A. The new tax will be beneficial in the long run

B. Low-income Americans are more likely to fall ill

C. Future generations will be hooked on smoking

D. Adults will depend more on their families

高二英语阅读理解简单题查看答案及解析

Phillip, can you see something red _____ in the distance on the water?

高二英语单项填空简单题查看答案及解析

Phillip, can you see something red _____ in the distance on the water?

A. Floated      B. float        C. being float     D. floating

高二英语单项填空中等难度题查看答案及解析

单词拼写（每小题1分, 共10分）

1.You can take ___________ (占有) of the front seat so as to see the blackboard clearly

2. They often ______________ ( 捐赠) food and clothing to the poor.

3.He made an ___________（尝试） to cheat in the exam.

4.You can easily ___________（阐明） the problems if you study British history.

5.A golden __________（婚礼） is the fiftieth anniversary of a marriage.

6.She wore a pair of ________ (钻石) earrings at last night’s party.

7.Having lived in Hawaii all his life, he was not __________ (习惯于）to the cold of Northern Europe.

8.He was _______ （羞愧）of his body so he decided to go on a diet and do more exercise.

9.__________ (青少年) often take more risks than adults.

10.All the ____________ (女性的) workers in this factory got a present on March 8.

高二英语单词拼写中等难度题查看答案及解析