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1671．Write at least five sentences to describe one of the astronauts mentioned in this unit，and then underline the infinitives in your writing.
发布：2024/7/3 8:0:9组卷：1引用：0难度：0.91672．Read to the passage below and tell whether the following tips are Right（R） or Wrong（W）.
We humans are a curious species.As NASA says on its website， "Humans are driven to explore the unknown，discover new worlds，push the boundaries（边界）of our scientific and technical limits，and then push further."
And space exploration is where we've been "pushing" our furthest curiosity.
The year of 2019 began with two pieces of exciting space exploration news.On Jan 3，China landed a spacecraft，Chang'e 4，on the moon's far side—the side we can't see from Earth--for the first time in human history.And according to a report published on Jan 9 in Nature，scientists from the Canadian Hydrogen Intensity Mapping Experiment（CHIME）detected（探测）repeated radio signals from a galaxy 1.5 billion light years away，possibly sent by intelligent aliens.
However，what's even more exciting is the fact that when it comes to space exploration，we forget our political and cultural differences—the things that so obsess（使……痴迷） us.It has worked all the way along our journey into space.
When US astronaut Neil Armstrong （1930 ～2012）became the first human to set foot on the moon in 1969，for example，he told the world， "That's one small step for man，one giant leap for mankind." Now，with Chang'e 4 touching down on new moon territory（领域），China's aim is to help scientists from around the world find out more about Earth's only satellite.And with the discovery of the CHIME astronomers，we're one step closer to answering a common question in science：Are humans alone in the universe？
（1）Human beings are always curious to explore the unknown.
（2）China sent Chang'e 4 on the Mars' far side for the first time in history.
（3）Scientists received a radio signal from a galaxy 1.5 billion light years away probably sent by intelligent aliens.
（4）When exploring space，political and cultural differences are forgotten by us.
（5）Setting foot on the moon is a small step for a man but one giant leap for mankind.发布：2024/7/3 8:0:9组卷：1引用：0难度：0.91673．One evening，I left a restaurant just ahead of
（一位帮助她年迈母亲的女性）.I approached the stairs and paused there，（试着看看） if my painful knees could climb them.To my right appeared an arm to assist.It was that of the elderly mum.It was a little but（感动的） lift from a lady who just needs assistance herself.发布：2024/7/3 8:0:9组卷：4引用：0难度：0.91674．Make sentences based on the given expressions.
can't wait to do；be curious about；astronaut发布：2024/7/3 8:0:9组卷：0引用：0难度：0.51675．I carefully chose a present from a variety of goods. （select，diversity）
发布：2024/7/3 8:0:9组卷：0引用：0难度：0.61676．We decided to go to the south to find some ways to make a living. （head，seek，earn）
发布：2024/7/3 8:0:9组卷：0引用：0难度：0.71677．I spent ages trying to solve the problem，but gave up feeling hopeless for the coming future.（in despair）
发布：2024/7/3 8:0:9组卷：0引用：0难度：0.91678．Read the text of each conversation and then match each conversation with the relationship between the speakers.
（Text 1）A.mother and son
B.hostess and guest
C.teacher and student
D.interviewer and interviewee
W：Was I supposed to give the presentation about festivals and celebrations this week？
M：Probably，it's your turn.
They are..
（Text 2）
W：John，what are you doing on your computer？Don't you remember your promise？
M：This is not a game.It's only a crossword puzzle that helps increase my vocabulary.
They are.
（Text 3）
M：Hello，Sang Lan.I'm from China Daily.Can you introduce something about yourself to us？
W：Of course.I'm glad to have a chance to talk with you.
They are.
（Text 4）
M：If you'll excuse me，I really should be off now.
W：Not yet surely.Have another drink at least.
M：No，thanks.And thank you very much for the delicious meal.
W：Thanks for coming.
They are.发布：2024/7/3 8:0:9组卷：2引用：0难度：0.91679．Once upon a time，there was a large mountainside，（1）
an eagle's nest rested.The eagle's nest contained 4 eagle eggs inside.One day，an earthquake rocked the mountain，（2）（cause） one of the eggs to roll down to a chicken farm，（3）（locate） in the valley below.The chickens knew they must protect and care for the eagle egg，so an old hen volunteered to do it.
Several days （4）（late），the eagle egg hatched and a beautiful eagle was born.（5）（sad），however，the eagle was raised to be a chicken.Soon the eagle believed he was nothing more than a chicken.The eagle loved his home and family but （6）（he） spirit cried out for more.
One day，the eagle looked to the sky and noticed a group of mighty eagles soaring（高飞）in the sky."Oh，"the eagle cried in （7）（amaze），"I wish I could soar like those birds."The chickens burst into laughter，"You cannot soar like those.You are a chicken and chickens do not soar."
The eagle continued staring （8）real family up above，dreaming that he could be like them.Each time the eagle talked about his dream，he （9）（tell） it could not be done.That was （10）the eagle learned to believe.As a result，the eagle stopped dreaming and continued to live his life as a chicken.Finally，after a long life as a chicken，the eagle passed away.发布：2024/7/3 8:0:9组卷：5引用：0难度：0.91680．It was great fun walking along the streets，enjoying the relaxing atmosphere.
Definition
Sentence发布：2024/7/3 8:0:9组卷：0引用：0难度：0.6
