假设你是李华，你们学校的外教老师Mr. Hans组织英语小组同学周六下午去他公寓交流阅读莫言小说《蛙》（Frog）的读后感，你因故无法参加。请按下列要求用英语给他写一封100~120个词的信件。内容应包括：
1. 表示歉意；
2. 解释缺席原因；
3. 询问借阅讨论摘要的事宜。
Dear Mr. Hans,
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Best wishes,
Yours
Li Hua
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Dear Mr. Black,
I’m Li Hua, an exchange student from China. I had been studying in your school for a year. I am deep moved by the kindness of people around. What I want to say first is that the teachers here are very friendly. They do what they can help me and encourage me to study hard. Whenever asking, they give satisfactory answers. Beside, my classmates offer me a lot of help, either. We get on well to each other and I have made quite a few good friend. At home, Walter’s parents take good care of me, treating to me as if I were their own child.
I’m so grateful to all these people, with their help I have been accustomed to American culture and gained a lot of knowledge.
Best wishes!
Yours,
Li Hua
下面文章中有5处需要添加小标题。请从以下选项（A、B、C、D、E和F）中选出符合各段意思的小标题。选项中有一项是多余选项。
A. Kripke’s Research Tool
B. Dangers of Habitual Shortages of Sleep
C. Classification of Sleep Problems
D. A Way of Overcoming Insomnia
E. Sleep Problems of Long and Short Sleepers
F. Oversleeping — Too Much of a Good Thing______
Although the dangers of too little sleep are widely known, new research suggests that people who sleep too much may also suffer the consequences.______
Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling and staying asleep, as well as a number of other sleep problems, than people who sleep 8 hours a night. People who slept only 7 hours each night also said they had more trouble falling asleep and feeling refreshed after a night’s sleep than 8-hour sleepers.______
Previous studies have shown the potential dangers of chronic(慢性的) shortages of sleep — for instance, one report demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more.______
For the current report, Kripke reviewed the responses of 1,004 adults to sleep questionnaires, in which participants indicated how mush they slept during the week and whether they experienced any sleep problems. Sleep problems included waking in the middle of the night, arising early in the morning and being unable to fall back to sleep, and having tiredness interfere with day-to-day functioning.______
Kripke found that people who slept between 9 and 10 hours each night were more likely to report experiencing each sleep problem than people who slept 8 hours. In an interview, Kripke noted that long sleepers may struggle to get rest at night simply because they spend too much time in bed. As evidence, he added that one way to help insomnia is to spend less time in bed. “It stands to reason that if a person spends too long a time in bed, then they’ll spend a higher percentage of time awake,” he said.
As you are probably aware, the latest job markets news isn’t good: Unemployment is still more than 9 percent, and new job growth has fallen close to zero. That’s bad for the economy, of course. And it may be especially discouraging if you happen to be looking for a job or hoping to change careers right now. But it actually shouldn’t matter to you nearly as much as you think.
That’s because job growth numbers don’t matter to job hunters as much as job turnover(人员更替) data. After all, existing jobs open up every day due to promotions, resignations, terminations(解雇), and retirements. (Yes, people are retiring even in this economy.) In both good times and bad, turnover creates more openings than economic growth does. Even in June of 2007, when the economy was still moving ahead, job growth was only 132,000, while turnover was 4.7 million!
And as it turns out, even today — with job growth near zero — over 4 million job hunters are being hired every month.
I don’t mean to imply that overall job growth doesn’t have an impact on one’s ability to land a job. It’s true that if total employment were higher, it would mean more jobs for all of us to choose from (and compete for). And it’s true that there are currently more people applying for each available job opening, regardless of whether it’s a new one or not.
But what often distinguishes those who land jobs from those who don’t is their ability to stay motivated. They’re willing to do the hard work of identifying their valuable skills; be creative about where and how to look; learn how to present themselves to potential employers; and keep going, even after repeated rejections. The Bureau of Labor Statistics data shows that 2.7 million people who wanted and were available for work hadn’t looked within the last four weeks and were no longer even classified as unemployed.
So don’t let the headlines fool you into giving up. Four million people get hired every month in the U.S. You can be one of them.The author tends to believe that high unemployment rate ______.
| A．discourages many people from landing jobs |
| B．prevents many people from changing careers |
| C．should not stop people from looking for a job |
| D．does not mean the U.S. economy is worsening |
Where do most job openings come from?
| A．Job growth. | B．Job turnover. |
| C．Improved economy. | D．Business expansion. |
What does the author say about overall job growth?
| A．It doesn’t have much effect on individual job seekers. |
| B．It increases people’s confidence in the economy. |
| C．It gives a ray of hope to the unemployed. |
| D．It doesn’t mean greater job security for the employed. |
What is the key to landing a job according to the author?
| A．Education. | B．Intelligence. | C．Persistence. | D．Experience. |
What do we learn from the passage about the unemployment figures in the US?
| A．They clearly indicate how healthy the economy is. |
| B．They provide the public with the latest information. |
| C．They warn of the structural problems in the economy. |
| D．They don’t include those who have stopped looking for a job. |
Next Stop: Planet Mars
Fly me to the moon? That’s not far enough. On September 14, 2011, NASA released designs for a superrocket, the Space Launch System (SLS). This time the final destination will be Mars.
The SLS is a huge, liquid-fuelled rocket. If it is fully developed, it will be the most powerful rocket ever built. Its lift capability will be much bigger than that of the space shuttle of Saturn 5, the rocket that sent the Apollo missions to the moon.
NASA is planning to launch its first unmanned test flight in 2017. It is hoped that the first crew will fly in 2021 and astronauts will make it to a nearby asteroid(小行星) in 2025. NASA hopes to send the rocket and astronauts to Mars from the asteroid by the 2030s, according to the Associated Press (AP).
NASA used liquid rockets to send Apollo, Gemini and Mercury into space, but later changed to solid rockets boosters(助推火箭) because they were cheaper. Tragically, however, a booster flaw(缺陷) caused the space shuttle Challenger to crash in 1986. The new project plans to return to liquid fuel.
According to AP, the rockets will at first be able to carry 77 to 110 tons of payload(净载重量). Eventually they will be able to carry 143 tons into space, maybe even as many as 165 tons, NASA officials said. By comparison, the Saturn 5 booster could lift 130 tons and the space shuttle just 27 tons.
However, unlike reusable shuttles, these powerful rockets are mostly one use only. New ones have to be built for every launch. This will be very costly.
NASA estimates that it will cost about $3 billion (19 billion yuan) per year, or $18 billion until the first test flight in 2017. NASA hopes to make money by allowing private companies to send astronauts to the International Space Station like giant taxi services, so that the program can be “sustainable”.
“This is perhaps the biggest thing for space exploration in decades,” said Senator Bill Nelson, a former astronaut. “The goal is to fly humans safely beyond low-Earth orbit(轨道) and deep into outer space where we cannot only survive, but one day also live.”What is the outstanding feature of the SLS?
| A．It’s equipped with an advanced control system. |
| B．It’s the first unmanned space shuttle in the world. |
| C．It’s the only vehicle that can fly astronauts to the moon. |
| D．It can send a lot more goods and passengers into space. |
What is Saturn 5?
| A．An aircraft that had a deadly flaw and crashed in 1986. |
| B．A series of rockets that once sent astronauts to the moon. |
| C．An unmanned space shuttle that was once famous in the world. |
| D．A kind of launch vehicle that will be used to carry astronauts to Mars. |
NASA plans to use liquid fuel in the new project because ______ than solid rockets boosters.
| A．it is less costly |
| B．it is much safer |
| C．it can last longer |
| D．it is more environmentally friendly |
According to NASA’s schedule, it will take ______ years to fully complete the SLS program.
| A．about 6 | B．about 10 |
| C．less than 14 | D．more than 19 |
It can be inferred from the passage that ______.
| A．the SLS program is planning to make reusable rockets |
| B．the goal of the SLS program is to enable humans to live on the moon |
| C．the US government may not have provided enough money for the SLS program |
| D．NASA will use SLS as a space taxi between the Earth and Mars |
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