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The first creature (1)
to orbit
to orbit
(orbit) our planet was just 2 years old.Her name was Laika.She was a good dog.Her 1957 flight paved the way for space(2)
exploration
exploration
(explore)when scientists wondered (3)
whether/if
whether/if
it was lethal (致命的)for living things.
    Humans are born explorers.Since the dawn of civilization,we(4)
have been attracted
have been attracted
(attract) over the horizon to find food or more space,or just to see what's beyond those trees or mountains or oceans.Our ability to explore has reached new heights.Airplanes could shorten distances,simplify travel and show us Earth from(5)
a
a
new aspect.By the middle of the last century,we aimed even(6)
higher
higher
(high).
    Our first steps into space began.Laika was followed into orbit four years later(7)
by
by
the first human,Yuri Alekseyevich Gagarin.Space travel is nothing like that in the movies.Getting from A to B requires complex calculations(8)
involving
involving
(involve) inertia (慣性)and gravity.Space is also dangerous.More than 20 astronauts have died while doing (9)
their
their
jobs.
    That hasn't stopped people from signing up and blasting off (發(fā)射升空).NASA's Apollo program has ended but private companies are readying their own space programs.A company(10)
named
named
(name) Space X is hoping to land civilian astronauts on Mars.Maybe you'll be a member of them.Don't forget to bring your dog.

【答案】to orbit;exploration;whether/if;have been attracted;a;higher;by;involving;their;named
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/4/20 14:35:0組卷:5引用:1難度:0.9
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    發(fā)布:2024/7/7 8:0:9組卷:18引用:2難度:0.5
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    發(fā)布:2024/6/27 10:35:59組卷:19引用:7難度:0.6
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