55. The “Style Lab” in Self provides readers with articles which _________.
A. offer advice to ordinary women on clothes.
B. show how a woman can become famous
C. introduced places with the best food
D. discuss ways of training models
F
Scientists
have found what look like caves on Mars, and say they could be protecting life
from the planet’s terrible environment.
The
first caves appear as seven mysterious black dots (点)
on the pictures which were sent back by NASA’s Mars Odyssey orbiter. Each as large
as a football field, they may be openings into natural caves below the Martian
surface.
“If
there is life on Mars, there is a good chance that you’d find it in caves,”
said Jut Wynne, one of the researchers who noticed the features (特征)
while working on a US Geological Survey Mars Cave Detection Program.
Jonathan
Clarke, a geologist with the Mars Society of Australia, yesterday described the
discovery as exciting.
One
photo taken at night by an infrared imager(红外线成像器)
showed one hole to be unusually warm, suggesting hot air may be flowing out.
“I
said: ‘Wow, that’s a cave’” Dr. Clarke said excitedly. “People have been
looking for these for a long time; now we have found them.”
He
agreed such caves could be perfect places to search for life escaping from the
bitterly cold, radiation-soaked(充满辐射的), dry surface.
“Tiny
drops of water could collect inside,” he said. “If there are gases coming out,
they could provide energy for a whole range of bacteria (细菌).
A cave is also a protection from radiation; the surface of Mars is exposed to
high levels of space radiation.”
The
caves probably formed when tube-shaped lava flows(管状岩浆流)
spread across the planet long ago. The outside of the tubes cooled, forming
solid walls, while something hotter inside allowed the remaining to flow out,
forming caves.
★★56.
What does the passage mainly talk about?
A. How the caves were formed on Mars.
B. How NASA sent the pictures back to earth
C. Caves on Mars may be full of hot air or a sign(迹象)of
life.
D. Scientists have completely recognized the surface
of Mars.
★57.
We can learn from the passage that __________.
A. water has already been found on Mars
B. the scientists found all the caves at night
C. it is certain that there is life in these caves
D. the surface of Mars is bitterly cold,
radiation-soaked and dry
★58. According to the passage, Dr. Clarke was so
excited because ________.
A. such caves could provide energy for life
B. they had finally found the caves on Mars
C. such caves would be perfect places to search for
life
D. There would be life on Mars.
★★59. Necessary conditions for life on Mars mentioned
in the passage may include_________.
A. lava and energy
B. water and radiation from space
C. gases and lava
D. water and protection from radiation
),在该行右边横线上写出该加的词。