阅读理解
Good news came from the Dongfeng Landing Site in Inner Mongolia. At 9:34 a. m. Beijing time on January 19th, 2026, the return capsule(返回舱) of the Shenzhou-20 manned spaceship landed safely. The scientists examined the capsule on site and made sure that everything was in good condition. The mission was a complete success.
However, this return was quite different from usual missions. It was an unmanned(无人的) return. The Shenzhou-20 manned spaceship was supposed to bring three astronauts back to Earth in November 2025. But just before their planned return, they discovered a small crack(裂纹) in one of the spaceship's windows. Scientists believed that it was probably caused by space debris, which is "junk" floating in space, like broken parts of old satellites or rockets.
For the safety of the astronauts, China decided to change the plan. The three astronauts came back safely aboard the Shenzhou-21 manned spaceship instead. The Shenzhou-20 manned spaceship was left in space. It continued to fly and carry out tests.
By the time it returned, the Shenzhou-20 manned spaceship had flown in orbit for 270 days. This set a new record for the longest time a Chinese manned spaceship had stayed in space. This proved that the spaceship could work well for up to nine months.
Now that the capsule is back, scientists will study it carefully, especially the damage to the window. It is believed that scientists will gain a lot from studying the capsule.
()1. How long was the return of Shenzhou-20 manned spaceship put off?
A. About 30 days.
B. About 2 months.
C. About 5 months.
D. About 270 days.
()2. What was special about the Shenzhou-20 mission?
A. It returned to Earth carrying three astronauts inside.
B. It landed at the Dongfeng Landing Site for the very first time.
C. It was an unmanned return mission and it set a record.
D. It was the first spaceship to have a crack in its window.
()3. What does the underlined word "debris" mean in the second paragraph?
A. New tools used by astronauts.
B. Dangerous winds in space.
C. Broken pieces of space junk floating in space.
D. Strong energy from the sun.
()4. According to the fourth paragraph, what did the 270-day flight of Shenzhou-20 prove?
A. The spaceship could work well for up to nine months.
B. Astronauts could then stay in space for over a year.
C. The Shenzhou-20 manned spaceship was faster than the Shenzhou-21 manned spaceship.
D. It was unsafe for spaceships to stay in orbit for long periods.
()5. What can we infer about the future according to the last paragraph?
A. Scientists will stop sending manned missions to space.
B. Scientists will use the lesson from the Shenzhou-20 manned spaceship to build safer spaceships.
C. Scientists will repair the Shenzhou-20 manned spaceship and send it into space again.
D. Scientists will only focus on studying windows.

1.B 2.C 3.C 4.A 5.B

1. 细节理解题：根据文章第一段可知神舟二十载人飞船的实际返回时间是2026年1月19日，第二段说明它原本计划在2025年11月返回，两个时间间隔约2个月，因此它的返回被推迟了大约2个月。
2. 细节理解题：根据第二段“It was an unmanned(无人的) return.”以及第四段“This set a new record for the longest time a Chinese manned spaceship had stayed in space.”可知，神舟二十任务的特殊之处在于它是无人返回任务，同时创造了中国载人飞船在轨停留时长的新纪录。
3. 词义猜测题：根据第二段划线词后的解释“which is "junk" floating in space, like broken parts of old satellites or rockets.”可知，debris的含义是漂浮在太空中的太空垃圾碎片。
4. 细节理解题：根据第四段最后一句“This proved that the spaceship could work well for up to nine months.”可知，神舟二十270天的在轨飞行证明该飞船可以正常工作长达9个月。
5. 推理判断题：根据最后一段“scientists will study it carefully, especially the damage to the window. It is believed that scientists will gain a lot from studying the capsule.”可以推断，科学家会从神舟二十的相关研究中获取经验，建造更安全的宇宙飞船。