? ? ? ?We don’t have beds in the spacecraft, but we do have sleeping bags. During the day, when we are working, we leave the bags tied to the wall, out of the way. At bedtime we untie them and take them wherever we’ve chosen to sleep.

　　On most spacecraft flights everyone sleeps at the same time. No one has to stay awake to watch over the spacecraft; the craft’s computers call us on the radio.

　　On the spacecraft, sleep time doesn’t mean nighttime. During each ninety-minute orbit (軌道) the sun “rises” and shines through our windows for about fifty minutes, then it “sets” as the spacecraft takes us around the dark side of the Earth. To keep the sun out of our eyes, we wear black sleep masks.

　　It is surprisingly easy to get comfortable and fall asleep in space. Every astronaut (宇航員) sleeps differently: some sleep upside down, some sideways, and some right side up. When it’s time to sleep, I take my bag, my sleep mask and my tape player with earphones and float (漂浮) up to the flight deck(駕駛艙). Then I get into the bag, and float in a sitting position just above a seat, right next to a window. Before I pull the mask down over my eyes, I relax for a while, listening to music and watching the Earth go by under me.

　　問題：

　　1.When the astronauts are working, sleeping bags are fastened _________.

　　A.on the wall

　　B.to their seats

　　C.onto the flight deck

　　D.anywhere they like

　　【參考答案】A

　　[考點]事實細節(jié)題

　　【精析】A 根據(jù)文章第一段的第二句“During the day, when we are working, we leave the bags tied to the wall, out of the way.”可知，白天“我們”工作的時候，會把睡袋拴在墻上，不讓它們擋道。因此，該題答案為A。

　　2.Why can all the astronauts sleep at the same time?

　　A.They have to follow the same timetable.

　　B.The radio will take care of the aircraft for them.

　　C.There are enough sleeping bags in the spacecraft.

　　D.There is no need for them to watch over the spacecraft.

　　【參考答案】D

　　[考點]事實細節(jié)題

　　【精析】D 根據(jù)文章第二段：“…everyone sleeps at the same time. No one has to stay awake to watch over the spacecraft; the craft’s computers call us on the radio.”可知，因為飛船上有計算機監(jiān)測飛船運行，所以不需要人為監(jiān)測飛船的飛行情況。因此，該題的正確答案為D。

　　3.To relax himself before sleep, the writer often _________.

　　A.makes a bed

　　B.gets into his bag

　　C.listens to music

　　D.wears a sleep mask

　　【參考答案】C

　　[考點]?事實細節(jié)題

　　【精析】C 根據(jù)文章最后一段的最后一句“Before I pull the mask down over my eyes, I relax for a while, listening to music and watching the Earth go by under me.”可知，作者在睡前會聽一會兒音樂來放松自己。因此，正確答案為C。

　　4. How long does it take the spacecraft to go round the Earth?

　　A.Forty minutes.

　　B.Fifty minutes.

　　C.Ninety minutes.

　　D.Twenty-four hours.

　　【參考答案】C

　　[考點]推理判斷題

　　【精析】C 通過文章第三段的第二句“During each ninety-minute orbit the sun ‘rises’ and shines through our windows for about fifty minutes, then it ‘sets’ as the spacecraft takes us around the dark side of the Earth.”可知，飛船繞地球飛行一周的軌道時長為90分鐘。因此，該題的正確答案為C。

　　5.The best title for this passage is _________.

　　A.Traveling in Space

　　B.Sleeping in the Spacecraft

　　C.Equipment Used by Astronauts

　　D.The Earth Seen from Outer Space

　　【參考答案】B

　　[考點]主旨大意題

　　【精析】B 通過對全文的通讀，可以知道，整篇文章談論的都是宇航員如何在太空飛船上睡覺的情況。據(jù)此推斷，文章的最佳標題應該為B。