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Unit 4 Space Exploration
Period 2 Reading and Thinking 练习
I.根据汉语意思拼写单词。
1.To many people, technology means computers, handheld devices, or ________ (交通工具) that travel to
distant planets.
2．An apple falls down because of ________ (重力)．
3．Each human being has to die, but ________ (人类) goes on world without end.
4．The astronauts trained for years in how to use their ________ (宇宙飞船)．
5．Where have all those boats gone in the ________ (码头)?
6．The Earth is only one of the numerous planets in the u________.
7．They put a weather satellite into the o________ around the earth.
8．You can book at your local travel a________.
9．Before the traffic s________ turns to green light, please don't cross the street.
10．The ceremony was t________ live by satellite to over fifty countries.
Ⅱ.单句语法填空
1．Nepal has ________ (frontier) with both India and China.
2．The ________ (datum) were collected from 69 countries.
3．The six astronauts ________ board will spend ten days in space.
4．After a short break, the match carried ________.
5．My leg got injured. I couldn't walk ________ (independent).
Ⅲ.单句写作
1．他们决意回到祖先的土地上。
They were ______________ go back to the land of their ancestors.
2．俗话说你必须三思而后行。
You have to look ____________________， as the saying goes.
3．对你的拒绝我感到非常失望。
I was ______________ your refusal.
4．我非常渴望能够帮助和照顾他人。
I had a strong ____________________ and care for people.
5．我们来这个小镇，是希望过一种简单的生活。
We came to this small town __________________ living a simple life.
III.阅读理解。（每个2.5分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Find Your Adventure at the Space and Aviation (航空) Center
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂If you're looking for a unique adventure, the Space and Aviation Center (SAC) is the place to be. The Center
offers programs designed to challenge and inspire with handson tasks and lots of fun.
More than 750,000 have graduated from SAC, with many seeking employment in engineering, aviation,
education, medicine and a wide variety of other professions. They come to camp, wanting to know what it is like to
be an astronaut or a pilot, and they leave with realworld applications for what they're studying in the classroom.
For the trainees, the programs also offer a great way to earn merit badges (荣誉徽章). At Space Camp,
trainees can earn their Space Exploration badge as they build and fire model rockets, learn about space tasks and try
simulated (模拟) flying to space with the crew from all over the world. The Aviation Challenge program gives
trainees the chance to earn their Aviation badge. They learn the principles of flight and test their operating skills in
the cockpit (驾驶舱) of a variety of flight simulators. Trainees also get a good start on their Wilderness Survival
badge as they learn about land and water survival through designed tasks and their search and rescue of a “downed”
pilot.
With all the programs, teamwork is key as trainees learn the importance of leadership and being part of a
bigger task.
All this fun is available for ages 9 to 18. Families can enjoy the experience together, too, with Family Camp
programs for families with children as young as 7.
Stay an hour or stay a week—there is something here for everyone!
For more details, please visit us online at www. oursac.com.
1．Why do people come to SAC?
A．To experience adventures.
B．To look for jobs in aviation.
C．To get a degree in engineering.
D．To learn more about medicine.
2．To earn a Space Exploration badge, a trainee needs to ________.
A．fly to space
B．get an Aviation badge first
C．study the principles of flight
D．build and fire model rockets
3．What is the most important for trainees?
A．Leadership. B．Team spirit.
C．Task planning. D．Survival skills.
B
Making beer on the moon might seem like a pipe dream to many, but for a group of students from the
University of California at San Diego, there is a chance to take their research beyond Earth's surface.
The Lab2Moon competition, held by TeamIndus, is offering students the chance to secure a spot on the
TeamIndus rocket this year.
Taking craft beer to the next level, the students want to test whether it's possible for yeast (酵母) to work and
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂create beer on the moon. However, they believe the experiment is not just a creative concept for astronauts, it's also
important for the development of drugs and yeastcontaining foods, like bread.
“The idea started out with a few laughs among a group of friends，” said Neeki Ashari, a fifthyear
bioengineering student at UC San Diego. “We all appreciate the craft of beer. When we heard that there was an
opportunity to design an experiment that would appear on India's moonlander, we thought we could combine our
hobby with the competition by focusing on the practicality (可行性) of yeast in outer space.”
The preparation work for the beer—up to the stage of adding yeast—will all be done on Earth, and rather than
separating the fermentation (发酵) and carbonation stages of making beer, the team plans to combine them.
This removes the need to release CO accumulated in the process, which may result in cleanliness and safety
2
issues out in space.
If selected, Team Original Gravity will be the first to make beer in outer space, and the fermentation will take
place in a vessel no bigger than a soda can.
All teams competing for the place will showcase their ideas in Bangalore, India.
Sadly, you won't be enjoying moon beer in your local craft beer bar anytime soon, as no samples will be
brought back. However, this small experiment could provide important data on just how practical it is for us to
make and create our own resources on other planets and moons by learning how consumables behave in different
environments.
4．How did the students feel when they got the chance to design the experiment?
A．Excited. B．Nervous.
C．Confident. D．Casual.
5．What does the underlined word “This” in Paragraph 6 refer to?
A．The mixing of two stages.
B．Adding yeast on Earth.
C．The preparation work on Earth.
D．Fermentation and carbonation.
6．What can we learn about the experiment from the passage?
A．It has been designed based on similar experiments.
B．It's quite competitive compared with other designs.
C．Its design has already been approved by TeamIndus.
D．Its process was adapted to make it safer and greener.
7．What does the author think of the students' idea?
A．It seems like a pipe dream.
B．It's extremely complicated.
C．It's meaningful and hopeful.
D．It's creative but impractical.
C
Try this: For an entire day, forget about the clock. Eat when you're hungry and sleep when you're tired. What
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂do you think will happen?
You may be surprised to find that your day is much like most other days. You'll probably get hungry when you
normally eat and tired when you normally sleep. Even though you don't know what time it is, your body does.
These patterns of daily life are called circadian rhythms (生理节奏), and they are more than just habits. Inside our
bodies are several clocklike systems that follow a roughly 24hour cycle. Throughout the day and night, our inner
clocks directly changes in temperature, body chemicals, hunger, sleepiness and more.
Everyone's rhythms are different, which is why you might like to stay up late while your sister always wants to
go to bed early. But on the whole, everyone is programmed to feel tired at night and energetic during the day.
Learning about our body clocks may help scientists understand why problems arise when we act out of step with
our circadian rhythms. For example, traveling across time zones can make people wake up in the middle of the
night. Regularly staying up late can make kids do worse in tests.
“There is a growing sense that when we eat and when we sleep are important parts of how healthy we are，”
says Steven Shea, director of the Sleep Disorders Program at Brigham and Women's Hospital in Boston.
One way to learn about how our body clocks tick is to
mess them up and see what happens. That's what neurologist (神经病学家) Frank Scheer and his workmates
did in a recent study. Staying up night after night, their studies suggest, could make kids extra hungry and more
likely to gain weight. And regularly sleeping too little, Scheer says, may be one cause of the recent increase in
childhood obesity.
8．What will happen if you forget about the clock according to the passage?
A．You will feel upset.
B．You will behave normally.
C．Your body will not know what time it is.
D．You will probably get hungry more easily.
9．Mike feels energetic at 12 midnight while Tom feels sleepy. What advice would be given by the writer?
A．Both should see a doctor.
B．Tom should see a doctor.
C．Both should take it easy.
D．Mike should have a watch.
10．How do Frank Scheer and his workmates study body clocks?
A．By seeing what happens when they are messed up.
B．By asking questions and collecting answers.
C．By studying people traveling across time zones.
D．By programming people with manmade clocks.
11．What will the writer most probably talk about next?
A．Other examples of what people will do when their body clocks go wrong.
B．Some effective medicines that can keep people from putting on weight.
C．The importance of eating healthy food.
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂D．What circadian rhythms are and how they work.
D
Many years ago, people relied on the sun, the moon and stars to find their way around. Later, the compass was
introduced. And now, we have satnav (卫星导航) systems to guide us. A satnav system uses groups of satellites to
show the user's location. They send information to a receiver, such as a smartphone, to show us where we are.
The earliest built satnav system is the Global Positioning Satellite System, which belongs to the US. Then
there is Russia's Global Navigation Satellite system, the European Union's Galileo and China's own satellite
navigation system, Beidou.
On October 18, 2017, an ARJ21700 plane, which was the first domestically (国内地) produced jet equipped
with the Beidou navigation system, successfully completed a test flight. The results showed the performance of the
system developed by China matches that of similar systems produced abroad, according to the Commercial Aircraft
Corporation of China.
Since its introduction in 2000, the Beidou navigation system has been increasing numbers of applications
linked to everyday life, from shared bikes to farming.
When it comes to shared bikes, smart locks that support Beidou chips offer more accurate positioning than
others, making it easier to find a bike.
Farmers can use Beidou—enabled tractors to plow (犁) the soil and use unmanned aircraft with Beidou to sow
seeds, which can improve efficiency and make better use of resources. Beidou's farming applications have spread
from Heilongjiang Province to Beijing, Liaoning, Shanxi, Hubei and other regions across China.
With its many uses, the Beidou navigation system is even playing a big role in the Belt and Road Initiative (一
带一路). “To date, the Beidou system has covered most parts of the AsiaPacific region, as well as countries along
the Silk Road Economic Belt and the 21st Century Maritime Silk Road，” said Yang Changfeng, chief designer
of the Beidou system.
Today, there are more than 20 Beidou satellites above our heads, and China plans to launch even more this
year to expand the Beidou network to better serve the Belt and Road Initiative.
“As Beidou expands its overseas reach, it will be increasingly popular in the logistics (物流) industry，”
said Miao Qianjun, Secretary General of the navigation services association. “Ships, for example, can use it to
position themselves while sailing across oceans to European countries, no longer limited to Southeast Asian regions
in the near future.”
12．What is the purpose of the first two paragraphs?
A．To compare some modern satnav systems.
B．To describe the benefits of satnav systems.
C．To tell us how satnav systems were created.
D．To introduce some satnav systems and their functions.
13．What can we know about the Beidou navigation system according to the article?
A．It was used successfully in a new jet plane.
B．It is more powerful than other satnav systems.
C．It was introduced to China on October, 2017.
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂D．It wasn't used in our everyday life until recently.
14．According to the article, the Beidou navigation system is already widely used for ________.
A．plowing the soil and sowing seeds
B．improving the efficiency of network
C．producing more smart locks for shared bikes
D．navigating ships across oceans to European countries
15．What is Miao Qianjun's attitude toward the future of the Beidou system?
A．Worried. B．Casual.
C．Positive. D．Doubtful.
V． 七选五
第二节(共5小题；每小题2.5分，满分12.5分)
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
Gardening 380 Kilometers above Earth
Astronauts have to go through physical, psychological, and technical training. They also go through training in
how to care for plants. These “astronaut gardeners” share their work and living space with plants.
Taking seeds and plants along on a trip isn't a new idea. As space trips become longer, it will be necessary to
grow food in space. __16__ Because of this, it's not practical to send everything needed for a long journey, only to
be used once and thrown away.
Plants can serve many uses on a space journey. They can provide more fresh things. __17__ Also, plants can
help to make air quality better because they produce oxygen. They can improve the quality of the air inside the
spacecraft—the only air the astronauts can breathe.
__18__ Due to the lack of gravity in space, the oxygen that the plants produce stays around the plants. This
can actually kill them, so fans are needed to circulate the air. Without gravity, roots don't “know” to grow down,
leaves don't “know” to grow up, and water doesn't easily travel up the roots to the leaves. __19__ Besides, soil is
too heavy to send to space, and special liquid gels (凝胶) are used to help plant growth.
Scientists are also working on the plants themselves. They are trying to make plants grow more rapidly and
grow with less water and light in space, and they are looking for ways to make plants more resistant to disease.
__20__ Imagine that deserts may one day provide lots of fresh food for local people, saving transportation costs.
Similarly, plants that are resistant to disease could provide an important food supply. With the world's population
now at about 7.7 billion people, our astronaut gardeners may help discover ways to feed those billions.
A．Every plant grown in space must have several uses.
B．However, there are challenges with growing plants in space.
C．Such methods may result in improvements back here on Earth.
D．The cost of taking anything into space is about $22,000 per kilogram.
E．Specialized containers are being developed to help the plants grow correctly.
F．Astronauts will welcome the addition of fruit and vegetables to their diet of dry foods.
G．Currently all oxygen is taken aboard in tanks.
更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂更多资料添加微信号：hiknow_007 淘宝搜索店铺：乐知课堂
