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

----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

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

Why has the woman changed the boy’s seat?

A.Because he can’t see clearly.

B.Because he talks too much.

C.Because he has trouble in listening.

高二英语短对话中等难度题查看答案及解析

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

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

It was too dark, and I couldn’t _______ the words written on the blackboard.

A. look at   B. turn up    C. decide on    D.make out

高二英语单项填空中等难度题查看答案及解析

It was too dark, and I couldn’t _______ the words written on the blackboard.

高二英语单项填空简单题查看答案及解析

Would you please ______ the light ?  I can’t see much clearly . It is getting dark .

A. switch off     B. switch on    C. turn off       D. take on

高二英语单项填空中等难度题查看答案及解析

Without sleeves, the scars on his arms were clearly ____________. We all pretended I couldn’t see them.

A.convinced B.transparent C.exposed D.occupied

高二英语单项填空简单题查看答案及解析