At times my mom has been uncomfortable seeing these qualities in me. For example，when I was 12，I went to Puerto Rico all by myself to stay with my grandmother for the summer. My mom was extremely nervous about it. She kept telling me how things were different in Puerto Rico，to always put on sunscreen，not to wander away from my grandmother，and other warnings. She helped me pack and did not leave the airport until she saw my plane take off.
But despite her worries，she let me go on my own. As I moved into my teens，she continued to give me space to grow and learn，even when it might have been difficult for her. When I reached my senior year，I decided to move away for college. Once again I found that I differed from my peers：While many of them wanted to stay close to home，I couldn’t wait to be out in the world on my own. While my mom may not have been happy at the thought of my going away，she was supportive and excited for me.
One big thing I realized during my senior year，as my mom granted me more freedom，was that she actually believes in me and trusts me. That means a lot. Most of my life，and especially when I was little，the main person I tried to impress in my schoolwork or other things was my mother. I knew she expected nothing but the best from me. Sometimes it was hard to live up to her standards；getting a single B on my report card would make me feel bad because I knew she wanted me to have all A’s.
I know that her high standards have helped me stay focused on what’s important，like education，and made me who I am. I am thankful for her support and involvement in my life .Most of all I respect her. She is the strongest woman I know and that’s why I have turned out so strong and independent.
21. When the author decided to go to Puerto Rico，his mother________.
22. The author decided to move away for college to________.
23. We can learn from the third paragraph that the author’s mother________.
24. In the passage，the author mainly wants to tell us________.
29.The intended readers of this passage are _______.
30. The underlined word “defective” can best be replaced by ________.
31.Bookie’s will not buy back your used textbook if _______.
32.Which of the following is NOT TRUE according to the passage?
New data from NASA's Curiosity rover indicate Mars Crater once held an enormous lake. This discovery suggests that the red planet may have been much wetter than scientists thought and raises the possibility that the planet was once habitable.
“The size of the lake and the length of time and series that water was showing up implies that there may have been sufficient time for life to develop.” NASA's Mars Exploration Program scientist Dr. Michael Meyer told Reuters.
Curiosity collected the new data on its five-mile drive to Mount Sharp, the prime destination on its mission to study Mars' climate and geography. The rover landed in Gale Crater in August 2012.
After reaching Mount Sharp in September, the rover spent two months studying rocks at the base of the three-mile-high mountain, discovering fine layers of mudstone--which tend to collect at the bottom of lakes. This shows how a mountain inside a Mars' Gale Crater might have formed.
"If our assumption for Mount Sharp holds up, it challenges the idea that warm and wet conditions were passing, local, or only underground on Mars,” Dr. Ashwin Vasavada said in a written statement. “A more radical explanation is that Mars' ancient, thicker atmosphere raised temperatures above freezing globally, but so far we don't know how the atmosphere did that."
Vasavada said curiosity will continue to study changes in the rock formation as it climbs Mount Sharp in the next few months, which should test the team's hypothesis..
"We'll also look at the chemistry of the rocks to see if the water that was once present would've been of the kind that could support microbial life, if it ever was present," he said in a video released by NASA. "With only 30 vertical feet of the mountain behind us, we're sure there's a lot more to discover."
33. What does this text mainly talk about?
34. The discovery of the lake proves that _____.
35. Where does this text probably come from?
The new high-speed railway line between Urumqi, capital of the Xinjiang Uygur self-governing region，and Lanzhou, capital of Gansu province，has cut train travel time by half to less than 12 hours.
The dramatic improvement will benefit many families planning reunions for Spring Festival.
“For the first time，I feel home is not that far away after all.” said Liang Shaofu as he boarded a high-speed train in Urumqi with six members of his family．
The 35-year-old left Lanzhou to set up a dry fruit business in Xinjiang eight years ago，and he has now settled in Urumqi．
The 1,776-km line, which passes through Qinghai province and is the country’s first high-speed railway to be built in a high-altitude region, came into service on Dec 26.
“We normally drive home for Spring Festival to avoid the difficulties of buying seven train tickets for the whole family during the peak season.” Liang said. “Driving can be very tiring and dangerous sometimes，so one year we even decided not to go back to Lanzhou simply to avoid the trip.”
More than 600,000 passengers traveled on the line during its first month，and the Urumqi Railway Bureau said the introduction of high-speed services will ease transport pressure during the Spring Festival peak season.
The existing usual railway line could no longer support Xinjiang’s development. All passenger trains will gradually shift to the new link，leaving the old one to be used for goods. As a result，Xinjiang’s annual goods ability could reach 200 million metric tons from the current 70 million．
The line passes through areas that experience high winds, and it also crosses parts of the deserted Qinghai-Tibet Plateau and the bone-dry sands of the Gobi Desert．
The project could help China to promote its high-speed railway technology abroad，said Ma Xi zhang, director of the Lanzhou-Xinjiang railway project’s management department in Xinjiang.
25. How long did it take to go from Urumqi to Lanzhou by the usual train before?
26. What’s the main advantage of the new high-speed railway?
27. From the passage we can learn________.
28. Which of the following is true according to the passage?
It’s such a common event that you probably never asked yourselfwhy you sleep. ___36___. In fact, for sleep researchers, it’s one of thebiggest unanswered questions in the field.
Stop and think about it for a second. Why should we sleep? ___37___. But we sleep every night, even when we have had plenty of rest. There are, nodoubt, several different answers to this question, but let’s just consider onegeneral purpose of sleep: ___38___. Human beings are creatures that arenormally active during daylight hours, when our senses functions mosteffectively. ___39___. We can’t see objects well, our color vision isentirely lost, and we don’t have the smelling or hearing sharpness of otheranimals. So it actually does make sense to have us stay where we are during thedangerous period when night-waking animals are walking here and there. And onesure way to make sure we don’t fall down everywhere and get lost or eaten is tohave us not move for seven or eight hours, rising again only when the light isback and our survival chances are better.
It’s not the only reason wesleep. ___40___. Perhaps even the most important one.
A. Is it because we get tired?
B. Should that put human beings in a terrible situation?
C. But from a scientific point of view, this is far from anordinary matter.
D. But in terms of evolution, it may have been one of the firstreasons.
E.Furthermore, if you were designing an animal, would you have it come into longperiods of unconsciousness every twenty-four hours?
F. Sleep as a survival approach.
G. At night, humans do rather poorly.
People in communitieshave slowly been pushed apart through the years, mostly because people simplyaren’t taking the time to say a simple “hello” . After considering thisphenomenon, I decided I was going to change the way I got on ___61___others.
My opportunity came one morning when I was inthe community library. I passed by a girl ___62___ dropped her books outof her locker ___63___(think) that someone else would help her pick themup, I continued my way. However, when I had to go back ___64___, Iforgot my book, I noticed she had just finished picking them up by herself. Noone had stopped ___65___ (help) her.
“OK”, I thought to myself, “this is where Ishould have changed.”
My best opportunity came a few days laterwhen I saw a man sitting by himself waiting for the library to open, so I satdown next to him and ___66___ (begin) a conversation. It was difficultto get started, and even when I had to say goodbye, almost every ___67___(respond) from my new friend had a tone(语气) of o in it. And who could blame him?
People aren’t used to making ___68___unprepared chat with a stranger. But a change, no matter how ___69___(desperate) it is needed, doesn’t just happen. It takes people like us to makeit possible. I advise you to take a small step out of your comfort zone and tryto make someone’s day a little ___70___ (bright). Together, we canreally make our society come closer as a whole.
I remember when I was growing up being painfully shy. I remember my first time standing in front of people speaking. It was ___ bd blank ___; my knees were knocking ; my palms were sweating and I thought I was going to _ bd blank ___. But I got through it at last and kind of enjoyed it. Later I regarded it as a good chance to practice my __ bd blank ___talent. Now, after many years, the act of speaking in front of people brings me great _ bd blank ___.
Part of life philosophy which allows us to __ bd blank ___ healthily and creates happiness is how we look at __ bd blank __. They are in our life to create growth. Like the ___ bd blank ___goes“A chain is only as strong as its weakest link.”We get rid of our weakness then we become __ bd blank ___. Challenges are given to us so that we can grow ___ bd blank ___. The question is how we look at them. Looking at the challenges is to see their ___ bd blank ___ as positive. But many times when we are faced with a problem, we ___ bd blank ___ it as negative. If we are___ bd blank ___ in ourselves and see growth opportunities as creating ___ bd blank ___ changes in our life, they can help us to become stronger, just as how I ___ bd blank ___ the speech later.
We need to recognize challenges have their good functions that can ___ bd blank __ us. Once you learn to look upon challenges as opportunities to use a ___ bd blank ___ perspective and test you, they’ll help you gain strength . They___ bd blank ___ you good chances to grow healthily. Once you___ bd blank ___ those challenges, they no longer stay in your life and they’ll disappear. Of course that doesn’t mean you make them disappear without __ bd blank __,but the strength and ___ bd blank ___ you gain are worth the effort.