单选题 A bull grazes on dry wheat husks in Logan, Kansas, one of the regions hit by the record drought that has affected more than half of the U.S. and is expected to drive up food prices. Leading water scientists have issued one of the sternest warnings yet about global food supplies, saying that the world's population may have to switch almost completely to a vegetarian diet over the next 40 years to avoid catastrophic shortages. Adopting a vegetarian diet is one option to increase the amount of water available to grow more food in an increasingly climate-unstable world, the scientists said. Animal protein-rich food consumes 5 to 10 times more water than a vegetarian diet. One third of the world's arable (适于耕种的) land is used to grow crops to feed animals. Other options to feed people include eliminating waste and increasing trade between countries in food surplus and those in deficit. '900 million people already go hungry and 2 billion people are malnourished in spite of the fact that per capita food production continues to increase, ' they said. 'With 70% of all available water being in agriculture, growing more food to feed an additional 2 billion people by 2050 will place greater pressure on available water and land.' The report is being released at the start of the annual world water conference in Stockholm, Sweden, where 2, 500 politicians, UN bodies, nongovernmental groups and researchers from 120 countries meet to address global water supply problems. Competition for water between food production and other uses will intensify pressure on essential resources, the scientists said, 'The UN predicts that we must increase food production by 70% by mid 21th century. This will place additional pressure on our 'already stressed water resources', at a time when we also need to allocate more water to satisfy global energy demand—which is expected to rise 60% over the coming 30 years—and to generate electricity for the 1.3 billion people currently without it, ' said the report. Overeating, undernourishment and waste are all on the rise and increased food production may face future constraints from water scarcity. 'We will need a new recipe to feed the world in the future, ' said the report's editor, Anders Jagerskog. A separate report from the International Water Management Institute (IWMI) said the best way for countries to protect millions of farmers from food insecurity in sub-Saharan Africa and south Asia was to help them invest in small pumps and simple technology, rather than to develop expensive, large-scale irrigation projects. 'Farmem across the developing world are increasingly relying on and benefiting from small-scale, locally-relevant water solutions. These techniques could increase yields up to 300% and add tens of billions of U. S. dollars to household revenues across sub-Saharan Africa and south Asia.' said Dr. Colin Chartres, the director general.

单选题Mr. Smith can be quite sad ______ , though in public he is extremely cheerful.

单选题Those who pass the test will be ______ to the next grade.

单选题In Paragraph 2, the word" legitimate" most probably means ______.

单选题Another common ______ about older people is that they are too old to learn new skills.

单选题It has always been the ______ of our firm to encourage workers to take part in social activities.

单选题Your left ______ hemisphere controls the right-hand side of your body.

单选题Your sister used to visit you quite often, ______?

单选题 Directions: For this part, you are allowed 30 minutes to write an essay entitled The Courage of Making Mistakes by commenting on the saying 'The only man who never makes mistakes is the man who never does anything.' You should write at least 150 words but no more than 200 words.

单选题After negotiation for some time, all the members of the association promised to ______ to the strict code of practice.

单选题 Why I Became a Teacher: to Pass on My Love of Literature A. Like lots of people, I never thought I'd be a teacher when I was at school. To be honest I only did my training because my husband was on a four-year course and I was on a three-year course at Cardiff University so I wanted to do something for one year. I thought doing a teaching qualification would be interesting and might be quite useful. I'm convinced that nothing else I might have done would have given me so much pleasure and satisfaction, or fitted in so well with family life. B. When I retire, in just a few years time, I can look back on a career which made a positive difference to the lives of thousands of children. Few other career choices can be so rewarding, so if you have a love of your subject and want the opportunity to pass that on then teaching can be a great career. C. Anyone going into teaching now will be used to teaching to formal work schemes and observation. I think it has raised standards in the profession but personally I feel the loss in the classroom. I've got the confidence of 30 years experience. I've seen new approaches come and go (and sometimes even identical 'new ideas' come and go more than once). D. For me, it's the passion for your subject and interest in the success of your students that matters more than how all the acronyms (首字母缩略词) add up. This is what will make you a good teacher. There's still room for individuals but you have to have the confidence and passion for your subject to make it work. E. The major challenge in teaching is time. There's not enough of it. It's hard if you're working full time to cope with the marking and feel that you have enough time to do your job properly. I've worked part time ever since I had children. I officially work three days a week—trot on my two days off I always work, it probably all adds up to what counts as a full week's work in most other jobs but the pay isn't bad so you can work part time and then the job really does fit in with family life. There are shortcuts to save time, and if had to work part time I'd have to use them. But working part time gives me the luxury to be a critical marker. It can take two hours to mark a 3,000 word A level essay, so if you have 16 pupils that's 32 hours of marking in one week for just one class. F. One of the benefits of being a part-time teacher is that I do have time to mark properly. Sometimes my feedback is almost as long as their essay but I really want the kids to do well. One of the best things about teaching is you get to raise children's aspirations, and to make a difference in their lives. You get visits and emails from your old students to prove it! It's great to make the difference, and, as they say, it does make it all worthwhile. G. The core of teaching is the subject and the pupils. We have a lot of NQTs and PGCE students coming to our school and sometimes I must admit to being disappointed when students don't know their subjects that well. I had an NQT who was teaching Animal Farm and asked me 'What's Marxism?'—and she'd got a first in her degree so it just goes to show that government initiatives to try and attract those with firsts aren't necessarily going work. H. However, lots of people drop out of teaching after a couple of years, it is an exhausting job. So my advice to those just starting out is: I. Don't lose your sense of proportion over things that happen in the classroom or in an observation that doesn't go well. As long as in the bigger picture of things you are connecting with kids and the subject—then don't get frustrated. Even after 30 years of teaching everyone has fearful days in teaching, when you think: 'Can I really do this?' You've got to keep positive; it's only a problem if you get more bad days than good days. J. Make sure teaching doesn't overwhelm you. You have to develop strategies especially if you are teaching a subject which requires a lot of marking. So plan things well. Get your pupils to do peer marking, which really can work. If you know you just can't handle any more marking in a particular week, get pupils to write a speech and then perform it in the next class. You've got to think ahead about times of maximum workload and plan accordingly—ask your more experienced colleagues for advice. K. You've got to keep your sense of humour, which is a great way of relieving a situation. I know I became a better teacher when I became a parent. I realised that kids can be so unpleasant sometimes, even your own kids. They don't mean it; they're just being kids. It doesn't mean they hate you or hate your lessons. When you're a new teacher coming into teaching, especially if you are young, you think of the students as almost your adversaries (对手), until you've got to defeat them. But you've got to be careful what you say. You can't belittle them too much or you can really harm them. L. Love your subject. If you are going to succeed in secondary school teaching, you must love your subject. The kids really know if you do or don't. M. You have to know your students are individuals, they learn in different ways. You have to be sensitive to that. N. You can't just teach a formula. 1 do worry about the difference between lip service to what the government say it's supposed to be like and what it's really like. I do hate the untruthfulness of that and the gulf seems to widen more and more. It feels like what matters most is what's tested. The trouble is nothing that is really worthwhile, the love of learning, connection with literature, having empathy—these are the things that really make a difference to someone's life but of course they can't be tested. Young teachers have to be careful not to get lost in formulas and initiatives. A more experienced teacher will have confidence to respond to kids and to talk about an issue that's raised in class that's not on the plan. The children will learn so much from that but there's no box to tick.

单选题The world plan mentioned in the passage aims at ______.

单选题The owner gave the night watchman 5,000 dollars ______.

单选题奥地利作曲家海顿创作的《创世纪》，是一部( )作品。

单选题If you never review your lessons, you will only have yourself to ______ if you fail in your examination.

单选题Max, a student of Chinese literature from Australia, is very ______ Beijing opera.

单选题The wall was built along the river______floods.

单选题Turn on TV, and you ______ many advertisements every day.