Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(铺砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers.It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages. Drier climates are of course more likely to have droughts than areas with more rainfall，but in any case, good management can help to make sure there is enough water to meet our basic needs.
Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live，but there's a lot we can do to lower the number.
You can take steps to save water in your home.To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full. Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.
1.Which of the following is most likely to lead to less groundwater?
A. Using river water. B. Throwing batteries away.
C. Paving parking lots. D. Throwing rubbish into lakes.
2.What can be inferred from the text?
A. All water shortages are due to human behavior.
B. It takes a lot of effort to meet our water needs.
C. There is much we can do to reduce family size.
D. The average family in America makes proper use of water.
3.The last paragraph is intended to________.
A. show us how to fix leaks at home
B. tell us how to run a dishwasher
C. prove what drinking glass is best for us
D. suggest what we do to save water at home
4.The text is mainly about________.
A. why paving roads reduces our water
B. how much we depend on water to live
C. why droughts occur more in dry climates
D. how human activity affects our water supply
While Jennifer was at home taking an online exam for her business law class, a monitor（监控器）a few hundred miles away was watching her every move.
Using a web camera equipped in Jennifer’s Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked -- remotely -- to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?
In the battle against cheating, this is the advanced technique and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid(有效的) - that students haven’t just searched the Internet to get the right answers.
Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.
Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students’ identities using personal information, such as the telephone number they once used.
Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test questions are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.
1.Why was Jennifer watched in an online exam?
A．To correct her typing mistakes.
B．To find her secrets in the room.
C．To prevent her from slowing down.
D．To keep her from dishonest behaviors.
2.For Internet universities, exams and diplomas will be valid if _____.
A．they can attract potential students
B．they can defeat academic cheating
C．they offer students online help
D．they offer many online courses
3.Some programs can find out possible cheaters by _____.
A．checking the question answering speed
B．producing a large number of question
C．scanning the Internet test question
D．giving difficult test question
4.Which of the following is the best title of this passage?
A．The Advantages of Online Exams
B．The High-tech Methods in Online Courses
C．The Fight against Cheating in Online Education
D．The War against the Booming of Online Education
Mrs. Goff is a math teacher at Lincoln High School. Mrs. Goff and I met my freshman year. Zach Howe and I were on our way to a baseball game when he said he needed to get his stuff from Mrs. Goff’s room. I had no idea who she was then, but he said she was great. Well, he was definitely right.
Last year, I had a college math class that required me to be in the computer lab, which was located directly behind Mrs. Goff’s room. When I struggled in the section, I would go to Mrs. Goff’s and ask for assistance. She told me that I was a little too dependent and not confident enough in my ability.
A little confidence, combined with effort, will do wonders for anyone in anything. If you go into something thinking negative thoughts, negative things will happen. Mrs. Goff taught me that it was OK to make a few mistakes. Mistakes are a part of everyone’s life. She told me that it is how you learn from them that defines your character. A person that learns from his or her mistakes is more likely to be a successful person in life.
This year, I have spent a lot of time with Mrs. Goff. She really helps me instill(逐渐灌输) confidence in myself and others around me. The encouragement that she has given me made me realize that I can do the same thing for people. Therefore, she has helped my leadership skills and increased my confidence in being outgoing.
Mrs. Goff is a great role model in my life, and I appreciate everything she has done for me. I will never forget the things that she has done for me and the things she has helped me learn and accomplish throughout high school. I hope to be as good a teacher as she and give encouragement that she has for me and all of her students.
1.What can we conclude from the passage?
A. A little confidence may help you achieve what might be impossible.
B. Mrs. Goff is the best math teacher.
C. A teacher determines the fate of a student.
D. The author became successful due to Mrs. Goff.
2.What does the author intend to say in the third paragraph?
A. You are sure to succeed with confidence and effort.
B. Take a positive attitude towards your mistakes.
C. Try to avoid making mistakes in your everyday life.
D. A successful person may make fewer mistakes.
3.It can be inferred from the passage that ______.
A. the author now is working as an excellent teacher.
B. Mrs. Goff has a great effect on the author.
C. the author has made many mistakes at school.
D. Mrs. Goff should have helped the author more.
4.Mrs. Goff spent much time with the author______.
A. to make him realize he can help people around
B. to help him gain more and more confidence
C. to tell him how to give others encouragement
D. to share her experience with him and others.
Night after night, she came to tuck me in (给…掖被子), even long after my childhood years. Following her long-standing custom, she’d and push my long hair out of the way, then kiss my forehead.
I don’t remember when it first started me----her hands pushing my hair that way. But it did annoy me, they felt work-worn and rough against my young skin. , one night, I shouted at her, “Don’t do that anymore ----your hands are too !” She didn’t say anything in reply. But never again did my mother close out my day with that expression of her love.
Time after time, with the passing years, my thoughts to that night. By then I missed my mother’s , missed her goodnight kiss on my forehead. Sometimes the incident very close, sometimes far away. But always it existed in the back of my .
Well, many years have passed, but mother’s rough hands are still doing things for me and my family. She’s been our doctor, into a medicine cupboard for the medicine to us children of our pain. She makes the best food in the world and always keeps our clothes clean.
Now, my own children are grown and gone. Mom no longer has Dad, and on special , I find myself drawn next door to spend the night with her. So it was late on Thanksgiving Eve, as I slept in the bedroom of my youth, a familiar hand ran across my face to brush the hair from my forehead. Then a kiss, ever so gently, my forehead.
In my memory, for the thousandth time, I the night my young voice , “Don't’ do that anymore----your hands are too rough!” Mom’s hand in my hand, I blurted out how sorry I was for that night. I thought she’d remember, as I did. But Mom didn’t know what I was talking about. She had forgotten ---and ---long ago.
That night, I fell asleep with new appreciation for my gentle mother and her caring hands. And the that I had carried around for so long was nowhere to be found.
1.A. set down B. put down C. lie down D. lean down
2.A. inspiring B. annoying C. boring D. upsetting
3.A. for B. although C. so D. while
4.A. Gradually B. Certainly C. Finally D. Absolutely
5.A. rough B. tough C. smelly D. dirty
6.A. unexpected B. strange C. familiar D. ridiculous
7.A. dashed B. returned C. wandered D. ran
8.A. kiss B. expression C. hands D. hair
9.A. happened B. turned C. felt D. seemed
10.A. mind B. world C. record D. history
11.A. sliding B. reaching C. touching D. dipping
12.A. operate B. rid C. charge D. prevent
13.A. situations B. conditions C. positions D. occasions
14.A. quickly B. unwillingly C. hesitantly D. roughly
15.A. pressed B. struck C. dropped D. touched
16.A. recalled B. regained C. repeated D. reminded
17.A. complained B. laughed C. criticized D. whispered
18.A. Conducting B. Commanding C. Controlling D. Catching
19.A. ignored B. abandoned C. forgiven D. forbidden
20.A. guilt B. shame C. pity D. sorrow
The furniture, with its modern style and bright colors, suits modern houses and their gardens, but looks _____ in the garden of a traditional home.
A. out of question B. out of order C. out of sight D. out of place
To our anger, many poverty-stricken counties build luxurious office buildings instead of _______ money to improve the miserable conditions of local schools.
A. declaringB. divorcingC. distributingD. dragging
