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1661．Astronaut Scott Kelly has been living on the International Space Station （ISS） since March 28，2015.And just like any other home，the ISS requires some housekeeping，in the form of regular work and repairs.
That is why Kelly and his partner Kjell Lindgren performed activities，outside the station on Wednesday.（1）It was the first spacewalk for both men.
The ISS has been in continual use for 15 years，and has hosted over 200 people，including astronauts and private tourists.During their activities，Kelly and Lindgren did basic electrical work，such as attaching new wires that would provide power to docking ports（接轨舱门） on the station. （2）Also，the two astronauts fixed a thermal（热的） cover on a key scientific instrument on the station to protect it from the freezing temperatures of space.
（3）However，Lindgren dealt with some of the more challenging parts of the job a s he has longer arms than Kelly.During a spacewalk，the simplest work becomes a difficult task.Kelly and Lindgren spent months training and practising for the operation.The preparation began in NASA's Neutral Buoyancy Lab（NBL）. （4）
（5）While each suit is built to fit perfectly on the astronaut who will wear it，adjustments need to be made right up to the time when the spacewalk begins.The adjustments address any changes in the astronauts' bodies that have occurred as a result of being a gravity-free environment.A.The ports will be used when other people arrive at the ISS in 2020.
B.Here astronauts are made to work in an environment similar to the one outside the space station.
C.Lindgren alone led the spacewalk while Kelly stayed in the spaceship.
D.The housekeeping began early in the morning and ended at 3：00 in the afternoon.
E.Even getting the space suits ready can take days.
F.As the more senior astronaut，Kelly led the spacewalk.
G.The operation began at 8：03 am and lasted for more than seven hours.发布：2024/7/4 8:0:9组卷：7引用：4难度：0.91662．As a young person，you
pursue your dream instead of idling away your time.发布：2024/7/4 8:0:9组卷：1引用：0难度：0.71663．The bones and muscles of astronauts can get very weak in space for the l
of gravity.发布：2024/7/4 8:0:9组卷：0引用：0难度：0.81664．Never spend your money before you have earned it.—Thomas Jefferson
发布：2024/7/4 8:0:9组卷：4引用：0难度：0.81665．
I go to the opera with my friends this weekend？发布：2024/7/4 8:0:9组卷：0引用：0难度：0.91666．You
draw the conclusion on the basis of facts.发布：2024/7/4 8:0:9组卷：0引用：0难度：0.71667．California is the third largest state in the USA but has the largest population，which is famous for its breathtaking scenery. （1）
that，it is also known for its（2），which have attracted people from all over the world.No one knows exactly when the first people arrived in what we now know as California.However，it is widely admitted that Native Americans were living in California at least 15，000 years ago.In 1848，gold was discovered in California.People from all over the world couldn't wait to（3）the state with the purpose of （4）.But few achieved their dream of becoming rich.Some died or returned home，but most remained，trying very hard to（5）despite great hardship.It is one of the reasons that（6）today's California's unique culture.Considering all kinds of cultural groups in California，scientists believe that there will be no major racial or cultural groups but simply （7）many races and cultures.发布：2024/7/4 8:0:9组卷：4引用：0难度：0.41668．
（1）It is exciting and challenging to explore theastronaut mystery explore equipment typically select mentally intelligence procedure high of the universe.
（2）The achievements in spacereally inspires humans to go further.
（3）If you want to be an astronaut，you must beenough and get a related college degree first.
（4）It is quite a complexto select suitable persons as astronauts.
（5）After the complex selection procedure，astronauts have to learn to use space.
（6）It is necessary for astronauts to receive much physical andtraining.
（7）It isof astronauts to have 1，350 hours of flying experience to become a qualified one.
（8）Afterto attend pilot training，Yang Liwei worked hard to meet all the requirements.
（9）Here are special requirements for theof astronauts.That is to say，they should not be too tall or too short.
（10）Anis a person whose job involves travelling and working in a space- craft.发布：2024/7/4 8:0:9组卷：7引用：0难度：0.51669．He was chosen as the chairman of the organisation because of his good manners.（be appointed）
发布：2024/7/3 8:0:9组卷：0引用：0难度：0.61670．
（1）Sassy threw her arms around her aunt andintention nowhere in case eventually to some extent pursue obligation hesitate hug her tight.
（2）My friend agreed to lend me money without.
（3）As a father，he has a strong sense ofto make sure that everyone in the family is taken good care of.
（4）It's a great idea but it will getif we cannot get enough financial support.
（5）Many people rushed to the West during the19th century with theof finding gold there.
（6）The research team had followed the experiment for 2 decades；，they got the satisfactory results.
（7）The young man decided to learn a new skill in his spare timehe would need it in the future.
（8）Nobody can stop him hisdream once he's made up his mind.
（9），being addicted to smart phones has become a global concern.发布：2024/7/3 8:0:9组卷：7引用：0难度：0.4
