单选题（）

单选题We didn"t finish the work in time. You ______ us since you were there.

单选题Even before canaries (特高频噪声) were brought into coal mines to alert workers to the presence of poisonous gas, birds were giving us early warning calls signaling the Earth's deteriorating environmental health. Global bird populations have shrunk by up to 25% since preagricultural (农业社会前的) times. Over the past 300 years, farmland has expanded from six percent of the Earth's surface to nearly 33%. Today, three quarters of threatened bird species depend on forests as their principal habitat; each year, however, some 13,000,000 hectares of forests are destroyed, an area the size of Greece. Nearly half the woodlands lost are relatively undisturbed primary forests that are home to a number of sensitive birds and other creatures. Direct exploitation, including hunting for food and capture for the pet trade, is the second greatest danger after habitat loss, while next is the intentional or accidental introduction of non-native species. As people travel to all parts of the globe, so too do the pests and pets that prey on, out-compete, or alter the habitat of native wildlife. Pollution poses an additional risk, affecting 12% of the threatened bird species. In addition to direct poisoning from fertilizer and pesticide applications, runoff of chemicals contaminates the wetlands that migrating waterfowl rely on. Persistent organic pollutants accumulate in the food chain and can lead to deformities, reproductive failure, and disease in birds. Worldwide, one-third of plant and animal species could become extinct by 2050 as a result of climate change, a relatively new threat. Global temperature spikes have brought severe alterations to the migration, breeding, and habitat ranges of some birds. In addition to these looming dangers, seven percent of threatened bird species are at risk from incidental mortality. A rapid decline in seabird populations over the last 15 years corresponds with the growth in commercial longline fisheries. In Europe, Central Asia, and Africa, electrocution on power lines has caused the mass mortality of raptors. Moreover, countless birds die each year from collisions with windows, the number-one cause of U.S. avian mortality. If birds disappear, so do the economically valuable services they provide. Preventing the extinction of additional bird populations depends largely on protecting the world's remaining wild spaces and preserving the health of our natural and altered ecosystems. Reports that the ivory-billed woodpecker, long thought to be extinct, is still with us thrilled bird watchers and others, but this sort of second chance seldom occurs in nature. Even with continued habitat protection, once wildlife populations drop dramatically, a rebound is far from guaranteed. Without stabilizing climate and human numbers, putting fences around all the parks in the world will not lie enough to protect threatened species.

单选题The Committee pronounced four members expelled for failure to provide information in the ______ of investigations.

单选题As the ______ to the general strike the management promised to increase the workers' payment.

单选题George asked the question because he wanted to show that he was ______.

单选题Because of the bombing that killed six people Washington has been urging the spokesman to ______ terrorism more severely.

单选题 Thousands of ______ at the stadium came to their feet to pay tribute to an outstanding performance.

单选题His strange behavior had greatly ______ me and my friends as well that evening. A. perplexed B. exhausted C. exclaimed D. exceeded

单选题 He was given a laptop computer in acknowledgement of his work for the company.

单选题We need one hundred more signatures before we take the ______ to the governor.

单选题Man: Jeff has lots of good ideas. Do you think he's willing to come to the meeting? Woman: Oh, I think he'd be glad to come. What is difficult is getting him to speak before a large crowd. Question: What does the woman imply about Jeff?

单选题下面的短文后列出了10个句子，请根据短文的内容对每个句子作出判断：如果该句提供的是正确信息，选择A；如果该句提供的是错误信息，选择B；如果该句的信息文中没有提及，选择C，并将所选答案的代码（指A、B或C）填在答题纸的相应位置上。The Thinking Habit That Changed My Life　　I remember one evening three years ago, when

单选题The profit-sharing plan is designed to ______ the staff to work hard.

单选题According to the author, a system of guaranteed subsistence minimum ______.

单选题We have to try every means to _____ the costs of the construction project.

单选题 South Africa has 11 official languages. If you want to say hello, it's 'sawubona' in Zulu, and 'hallo' in Afrikaans. Now, South Africa's school children may start using 'ni hao' to say hello. The country's education minister says, the nation is adding the Mandarin language teaching in some schools. Mandarin is the official spoken language of China. That country is a major trading power for South Africa. A recent agreement between the two nations centres on five areas of cooperation. They include development in basic education, school books and lessons, mathematics and science, teacher training and career education and research. South Africa officials have not said how much they teaching Mandarin will cost. Troy Martens is an official with South Africa's Ministry of Basic Education. She says the new partnership is extremely valuable. 'So it is very exciting and both countries have indicated that for them education is a high priority, and that is why education is high on the agenda of collaboration between the two countries,' said Martens. The part of the plan that has garnered the most attention is the inclusion of the Mandarin language in schools. A public opinion study last year found that South Africans have mixed feelings about China. The survey showed 46 percent of South Africans do not like the spread of Chinese ideas and customs in their country, the results also showed that 60 percent dislike Chinese music, movies and television. But Ms Martens said Chinese trade is more important than those feelings. She said it is extremely helpful to learners in South Africa to study Mandarin as well as Chinese culture. And she said not every school will offer Mandarin. 'Now this will not be compulsory, it will not be for every school, and it will not be for every child. But for schools that feel they have the capacity to offer Mandarin as a subject, we think it is a great opportunity for South African learners to be exposed to this international type of language,' said Martens. South Africa's population studies do not say how many native Chinese speakers are among its nearly 51 million people. Lisette Noonan heads the 80-year-old Pretoria Chinese School in South Africa's capital. The school serves about 500 students from kindergarten to grade 12. Every student studies Mandarin. Ms Noonan says the school welcomes the new cooperation between South Africa and China. She said it is in the best interests of children to study Mandarin. She said that especially true with China becoming what she called 'a huge economic power in the world'.

单选题Yesterday you were acclaimed; today you are ______. Isn't life full of ups and downs?

单选题The challenge of the school is______.