On May 15,2021,China's Tianwen 1 probe (探測器)successfully landed on Mars (火星)!This was a very difficult job.Only the US has done it before Tianwen 1's long journey began in July 2020.It went into the orbit(軌道)of Mars in February.After flying around Mars for 3 months,it finally touched down on Mars.
The final landing was very dangerous.People call it the "nine minutes of tenor(恐怖)".The probe had to do everything by itself because the control room on Earth had no way to help jye.ai.It had to slow down from 20,000 km per hour to zero.How did Tianwen 1 do it?
(1)What's the best title of' the text? BB
A.Flying around Mars
B.Making a hard landing
C.On Mars
D.On Earth
(2)When did Tianwen 1's journey start? CC
A.On May 15,2021.
B.On August 15,2021.
C.In July,2020.
D.In February,2020.
(3)How did Tianwen 1 land on Mars finally? CC
A.With the help of humans.
B.Through the control room.
C.On its own.
D.By making itself faster.
(4)From the text,we know that Tianwen 1's final landing is AA.
A.dangerous
B.easy
C.boring
D.interesting
【考點】記敘文;科技創(chuàng)新.
【答案】B;C;C;A
【解答】
【點評】
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發(fā)布:2024/4/20 14:35:0組卷:2引用:1難度:0.6
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