NASA's twin Mars rovers, Spirit and Opportunity, have been exploring the Red Planet since 2004.But a little more than a year ago, NASA lost contact with Spirit.The space agency has tried several ways to make contact with the rover, but Spirit has not sent back any signals.
Spirit landed on Mars on January 4, 2004.Three weeks later, Opportunity arrived.Soon after, the rovers went to the opposite side of Mars.Spirit's original mission was only designed to last for three months, but Spirit has worked for more than five years doing additional missions.Both rovers have made important discoveries about ancient Mars.They have taken thousands of images and found evidence in the rocks of a water, warmer past in Mars' history.
Spirit is solar-powered.It got stuck in a sand trap in April 2009, trapped deep into the soil and with its wheels turning around and around but not able to move forwards or backwards.Spirit had to agree that there is nothing that can be done to change the situation-it's never going to move again.However, even if it is a not moving station, it can still study the planet's atmosphere and deep interior.
NASA has been concentrating on trying to position its solar panels to get as much energy from the sun as possible, or to get the rover leaning in a manner that will allow the most amount of sunlight falling on its solar panels, in order to keep it alive during the coming winter months.Engineers have planned to rock the vehicle back and forth to acquire a more favorable position.However, no matter how many efforts have been made, Spirit still could not get out of the soft soil and could not lean itself toward the sun as the Martian winter approached.Without enough energy reaching its solar panels and with so little energy in its batteries, it went into hibernation, just like a polar bear, and has not communicated with Earth since March 22, 2010.
Whatever the future holds for Spirit, its mission has been an outstanding success.When it landed on the Red Planet in January 2004, no one was really sure how long it would continue working in the cold and dusty environment.As a matter of fact, three months was its original goal.
After so many fruitless efforts, NASA scientists are losing hope of ever reconnecting with Spirit, but they will give it one more try.Ground controllers are contacting Spirit over a range of frequencies and at different times during the day in case its internal clock stopped working and it lost track of time.They also are commanding the rover to turn on its backup radio transmitter in case the main one is dead.
If this final effort to connect isn't successful, NASA will shift the focus to its twin robot, Opportunity, which is in a different part of Mars.Opportunity is still on the move and continues to travel freely to this day.It has traveled 16.6 miles so far, and is currently rolling towards another crater it has yet to explore.
NASA has spent more than $900 million on the project but shows no sign of giving up on these determined and hard-working robots.The rovers are, though, experiencing gradual wear and tear, the expected damage to something caused by using it repeatedly over a period of time.Even before Spirit got trapped, one of its wheels had failed.And NASA says it's just a matter of time before both robots break down completely.
(1)
According to the passage, what can we know about Spirit?
[ ]
A.
It had explored Mars several times.
B.
Its original mission was to work for five years.
C.
It landed on Mars three weeks later than Opportunity.
D.
It discovered that Mars was once a warm and wetter place.
(2)
According to the passage, which of the following is NOT what NASA did?
[ ]
A.
Try to lean Spirit to make it get as much sunlight as possible.
B.
Rock Spirit back and forth to make it acquire a more favorable position.
C.
Make efforts to help Spirit get out of the soft soil where it is stuck.
D.
Contact and order Spirit to turn on its backup radio transmitter.
(3)
The reason why Spirit failed to communicate with the Earth is that ________.
[ ]
A.
it didn't have enough energy
B.
it had finished its task
C.
something was wrong with its wheels
D.
it met an unidentified creature
(4)
By saying “NASA will shift the focus” in Paragraph 7, the author means that ________.
[ ]
A.
NASA will move the center of Spirit out of the sand
B.
NASA will depend on Opportunity to do the exploration
C.
NASA will do nothing but wait for some opportunity
D.
NASA will make opportunity help Spirit
(5)
The last paragraph mainly informs us that ________.
[ ]
A.
NASA has planned to spend more money on Spirit
B.
Spirit will be brought back to Earth
C.
Spirit will stop operating totally in the future
D.
Spirit will cause damage to Mars
(6)
What's the text mainly about?
[ ]
A.
NASA makes the last effort to contact Spirit.
B.
Spirit has made many important discoveries on Mars.
Our boat floated on, between walls of forest too thick to allow us a view of the land we were passing through, though we knew from the map that our river must from time to time be passing through chains of hills which crossed the jungle plains.Nowhere did we find a place where we could have landed:where the jungle did not actually spread right down into the river, banks of soft mud prevented us going ashore.In any case, what would we have sailed by landing?The country was full of snakes and other dangerous creatures, and the jungle was so thick that one would be able to advance only slowly, cutting one’s way with knives the whole way.So we stayed in the boat, hoping we reached the sea, a friendly fisherman would pick us up and take us to civilization.
We lived on fish, caught with home-made net of string(we had no hooks), and fruits and nuts we could pick up out of the water.As we had no fire, we had to eat everything, including the fish, raw I had never tasted raw fish before, and I must say I did not much enjoy the experience; perhaps sea fish which do not live in the mud are less tasteless.After eating my raw fish, I lay back and dreamed of such things as fried chicken and rice, and ice-cream.In the never-ending damp heat of the jungle, ice-cream was a particularly frequent dream.
As for water, there was a choice:we could drink the muddy river water, or die of thirst.We drank the water.Men who had just escaped what had appeared to be certain death lose all worries about such small things as diseases caused by dirty water.In fact, none of us suffered from any illness as a result.
One day we passed another village, but fortunately nobody saw us.We did not wish to risk being taken prisoners a second time:we might not be so lucky to escape in a stolen boat again.
(1)
What they could see in the boat was only ________.
[ ]
A.
high wall
B.
villagers from time to time
C.
vast land
D.
heavy woods
(2)
They couldn’t land because ________.
[ ]
A.
the mud on the shore was too soft
B.
the forest was too thick to let them go through
C.
they could not find the mark on the map
D.
they could not find anyone to lead them out of the forest
(3)
The passage infers that the forest was ________.
[ ]
A.
rich of fruits and animals to be served as food
B.
not very thick as they could advance slowly by cutting the branches
C.
full of various dangerous beings
D.
full of ancient trees
(4)
The most proper title for this passage might be ________.
[ ]
A.
Escape
B.
Scenes of a River
C.
How to Survive on a boat
D.
A New Experience
阅读理解:
Our boat floated on, between walls of forest too thick to allow us a view of the land we were passing through, though we knew from the map that our river must from time to time be passing through chains of hills which crossed the jungle plains.Nowhere did we find a place where we could have landed:where the jungle did not actually spread right down into the river, banks of soft mud prevented us going ashore.In any case, what would we have sailed by landing?The country was full of snakes and other dangerous creatures, and the jungle was so thick that one would be able to advance only slowly, cutting one’s way with knives the whole way.So we stayed in the boat, hoping we reached the sea, a friendly fisherman would pick us up and take us to civilization.
We lived on fish, caught with home-made net of string(we had no hooks), and fruits and nuts we could pick up out of the water.As we had no fire, we had to eat everything, including the fish, raw I had never tasted raw fish before, and I must say I did not much enjoy the experience; perhaps sea fish which do not live in the mud are less tasteless.After eating my raw fish, I lay back and dreamed of such things as fried chicken and rice, and ice-cream.In the never-ending damp heat of the jungle, ice-cream was a particularly frequent dream.
As for water, there was a choice:we could drink the muddy river water, or die of thirst.We drank the water.Men who had just escaped what had appeared to be certain death lose all worries about such small things as diseases caused by dirty water.In fact, none of us suffered from any illness as a result.
One day we passed another village, but fortunately nobody saw us.We did not wish to risk being taken prisoners a second time:we might not be so lucky to escape in a stolen boat again.
(1)
What they could see in the boat was only ________.
[ ]
A.
high wall
B.
villagers from time to time
C.
vast land
D.
heavy woods
(2)
They couldn’t land because ________.
[ ]
A.
the mud on the shore was too soft
B.
the forest was too thick to let them go through
C.
they could not find the mark on the map
D.
they could not find anyone to lead them out of the forest.
(3)
The passage infers that the forest was ________.
[ ]
A.
rich of fruits and animals to be served as food
B.
not very thick as they could advance slowly by cutting the branches
C.
full of various dangerous beings
D.
full of ancient trees
(4)
The most proper title for this passage might be ________.
[ ]
A.
Escape
B.
Scenes of a River
C.
How to Survive on a boat
D.
A New Experience
阅读理解:
It was at least two months before Christmas when nine-year-old Almie Rose told her father and me that she wanted a new bicycle.As Christmas drew near, her desire for a bicycle seemed to fade, or so we thought.We bought the latest rages.Baby-Sitter’s Club dolls, and a doll house.Then, much to our surprise, on December 23rd, she said that she “really wanted a bike more than anything else.”
It was just too late, what will all the details of preparing Christmas dinner and buying last-minute gifts, to take the time to select the “right bike” for our little girl.So here we were-Christmas Eve around 9∶00 p. m., with Almie and her six-year-old brother, Dylan, nested snug in their beds.Now we could only think of the bicycle and the disappointment of our child.“What if the bicycle out of clay(a kind of earth)and write a note that she could trade the clay model in for a real bike?” her dad asked.“This is an expensive item and she is ‘such a big girl,’ and it would be much better for her to pick it out.”So he spent the next four hours painstakingly working with clay to make a tiny bike.
On Christmas morning, we were excited for Almie to open the little heart-shaped package with the beautiful red and white clay bike and the note.Finally, she opened it and read the note aloud.“Does this mean that I trade in this bike that Daddy made me for a real one?”Beaming, I said,“Yes.”Almie had tears in her eyes when she replied,“I could never trade in this beautiful bicycle that Daddy made me.I’d rather keep this than get a real bike.”At that moment, we would have moved heaven and earth to buy every bicycle on the planet!
(1)
Which is the right time order of the following events?
a.The girl asked for a new bike
b.The girl opened the little heart-shaped package
c.The parents bought the girl a modern and popular doll.
d.The father made the girl a bike with clay.
e.The girl would rather keep the clay bike than get a real one.
[ ]
A.
b, c, e ,d
B.
a, c, d, b, e
C.
a, c, b, d, e
D.
a, b, d, c, e
(2)
Which of the following statements is TRUE according to the passage?
[ ]
A.
The parents wanted the girl to have the clay bike forever.
B.
Tears were in the girl’s eyes because she didn’t like the present at all.
C.
The girl never lost her desire for a bike.
D.
The parents paid little attention to the daughter’s desire for a bike.
(3)
Why did Dad make the clay bicycle?
[ ]
A.
Because he wanted to buy a real one, but he had no money.
B.
Because he didn’t want to disappoint his daughter.
C.
Because he thought his daughter would like it.
D.
Because he wanted to give his daughter a surprise.
(4)
What can be inferred from the last sentence of the text?
[ ]
A.
The parents were happy and encouraged.
B.
The parents felt comfortable and relaxed.
C.
The parents were moved and felt proud of the girl.
D.
The parents felt disappointed and sorry for the girl.