We don’t have beds in the space shuttle 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 space shuttle flights everyone sleeps at the same time. No one has to stay awake to watch over the space-plane; the shuttle’s computers and the engineers at Mission Control do that. If anything goes wrong, the computers will ring an alarm and the engineers call us on the radio.In the space shuttle, sleep-time doesn’t mean nighttime. During each ninety-minute orbit the sun “rises” and shines through our windows for about fifty minutes, then it “sets” as our path 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 sleeps differently. Some sleep upside down, some sideways, 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 up to the flight deck. Then I crawl 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 have a rest for a while; listening to music and watching the Earth go by beneath me.【小题1】When it’s bedtime, astronauts put their sleeping bags ________.A．on the wallB．at Mission ControlC．in the flight deckD．in any place they like【小题2】The underlined phrase “watch over” in the second paragraph has the closest meaning to ________.A．go overB．research onC．look intoD．take care of【小题3】How long does it take for the space shuttle to go round the Earth?A．Forty minutes.B．Fifty minutes.C．Ninety minutes.D．Twenty-four hours.【小题4】The best title for this passage is ________.A．Sleeping in the Space ShuttleB．Travel in SpaceC．Sleeping Equipment for AstronautsD．The Earth Seen from Outer Space

4 . We don’t have beds in the space shuttle 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 space shuttle flights everyone sleeps at the same time. No one has to stay awake to watch over the space-plane; the shuttle’s computers and the engineers at Mission Control do that. If anything goes wrong, the computers will ring an alarm and the engineers call us on the radio.

In the space shuttle, sleep-time doesn’t mean nighttime. During each ninety-minute orbit the sun “rises” and shines through our windows for about fifty minutes, then it “sets” as our path 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 sleeps differently. Some sleep upside down, some sideways, 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 up to the flight deck. Then I crawl 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 have a rest for a while; listening to music and watching the Earth go by beneath me.

【小题1】When it’s bedtime, astronauts put their sleeping bags ________.

A．on the wall	B．at Mission Control
C．in the flight deck	D．in any place they like

【小题2】The underlined phrase “watch over” in the second paragraph has the closest meaning to ________.

A．go over	B．research on
C．look into	D．take care of

【小题3】How long does it take for the space shuttle to go round the Earth?

A．Forty minutes.	B．Fifty minutes.
C．Ninety minutes.	D．Twenty-four hours.

【小题4】The best title for this passage is ________.

A．Sleeping in the Space Shuttle	B．Travel in Space
C．Sleeping Equipment for Astronauts	D．The Earth Seen from Outer Space