问答题 [A] Since wind-pollinated flowers have no need to attract insects or other animals, they have dispensed with bright petals, nectar, and scent. [B] The result is insignificant-looking flowers and catk

问答题In some countries，people are no longer allowed to smoke in many public places and office buildings. Do you think this is a good rule or a bad rule？Use specific reasons and details to support your posi

问答题 Once the pollen has been snatched by the wind, the fate of the pollen is obviously up to the vagaries of the wind, but not everything is left to chance. [A] Wind-borne pollen is dry, rounded, smooth,

问答题 In the middle of the fourteenth century

问答题Do you agree or disagree with the following statement？A zoo has no useful purpose. Use specific reasons and examples to explain your answer.

问答题A university plans to develop a new research center in your country. Some people want a center for business research. Other people want a center for research in agriculture（farming）.Which of these two

问答题 [A] Pollen produced higher in the top branches is likely to go farther: it is windier and gustier and the pollen can be blown farther before hitting the ground. [B] Moreover, dangling catkins like ha

问答题5. Ancient Greek historian Herodotus wrote about the Phoenicians in his work The Histories. He claimed that around 600 B.C., they circumnavigated Africa by sailing south from the Red Sea, west around the Cape of Good Hope, and then north alongside the western part of Africa, whereupon they entered the Mediterranean Sea through the Straits of Gibraltar. This journey took approximately three years to accomplish. Ever since Herodotus made his claim, others have been skeptical about it for a number of valid reasons. To begin with, while the Phoenicians constructed good sailing ships, they were coast huggers not intended for rough, open seas. Their sails were square and therefore unable to do much more than catch a direct breeze, so the ships had little ability to tack into contrary winds. This would have been troublesome on the northward journey by Africa's west coast because the wind mostly blows from the north. The Phoenicians also would have been venturing into the unknown since they would have been unfamiliar with the African coast, its currents, the locations of reefs, and the prevailing winds for nearly the entire journey. The chances are that their ships could not have survived those dangers and either attempted the journey but were forced to turn back or sank somewhere along the way. Finally, the weather around the Cape of Good Hope is some of the worst in the world due to the strong winds and high waves. In other areas, the winds can be becalmed for weeks at a time. A recent attempt to recreate the voyage with a replica Phoenician ship proved the danger of the weather. The voyage only succeeded because the ship had satellite navigation aids, up-to-date weather reports, and an engine it used when the wind was not blowing. Directions You have 20 minutes to plan and write your response. Your response will be judged on the basis of the quality of your writing and on how well your response presents the points in the lecture and their relationship to the passage. Typically, an effective response will be 150-225 words. Question Summarize the points made in the lecture, being sure to specifically explain how they answer the problems raised in the reading passage.

问答题 Around the world

问答题1. Completing the Essay Complete the following sample essay. Use the phrases to help you write your essay. Agree I agree with this statement. In my opinion, ___________________________________________________________________________________________________________ The first reason is very simple. ___________________________________________________________________________________________________________ A second reason teachers are important is that ___________________________________________________________________________________________________________ A third reason is that ___________________________________________________________________________________________________________ Teachers are clearly of great importance to the success of a school. ___________________________________________________________________________________________________________ Disagree I believe teachers are important to schools, but I do not agree with the statement. ___________________________________________________________________________________________________________ First of all, ___________________________________________________________________________________________________________ Another reason is that ___________________________________________________________________________________________________________ Finally, ___________________________________________________________________________________________________________ I disagree with the statement because ___________________________________________________________________________________________________________

问答题 Located in Giza, Egypt

问答题Holidays honor people or events. If you could create a new holiday，what person or event would it honor and how would you want people to celebrate it？Use specific reasons and details to support your an

问答题《复合题被拆开情况》 COMETS 1 Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases water vapor, ammonia, methane, carbon dioxide, and carbon monoxide

问答题Plants can provide food，shelter，clothing，or medicine. What is one kind of plant that is important to you or the people in your country？Use specific reasons and details to explain your choice.

问答题Some students like classes where teachers lecture（do all of the talking）in class. Other students prefer classes where the students do some of the talking. Which type of class do you prefer？Give specif

问答题1

多选题What possible causes does the student consider for not liking the taste of vegetables? Choose 2 answers.

多选题What are the implications of the theory that bananas arrived in Africa 5,000 years ago? Choose on 2 answers.

多选题《复合题被拆开情况》 MESOLITHIC COMPLEXITY IN SCANDINAVIA 1The European Mesolithic roughly the period from 8000 B.C. to 2700 B.C. testifies to a continuity in human culture from the times of the Ice Age. [A] Th

填空题.Prions and Illness Prions are proteins responsible for several infectious diseases that can affect both humans and animals. In humans, prions cause a number of neurological diseases which result in a decrease in cognitive functions and that almost always end in death. Creutzfeldt-Jacob Disease—often called mad cow disease because of its debilitating effect on bovines—is one such prion disease that strikes the human brain. Some others are fatal familial insomnia, kuru, and Gerstmann-Straussler-Scheinker Disease (GSS). These diseases, while different, share some similarities, particularly their cause. Prion proteins are attached to cell surfaces and are usually not harmful; however, in each of the aforementioned diseases, a prion protein in the brain assumes a wrong shape, disrupting the cell it is attached to. This signals nearby prion proteins to form improper shapes, too. The process slowly spreads across the brain as it destroys neurons, builds up plaque-like matter, and makes holes in brain tissue. It is slow moving, so it may take several years before the first symptoms are recognized. There are three main forms of prion diseases: acquired, genetic, and sporadic. People get acquired prion diseases through infections by bad prions, typically through food. Kuru, a prion disease that was once common in New Guinea, was caused by cannibals eating the brains of people with bad prions, and Creutzfeldt-Jacob Disease, which humans get from ingesting infected beef, is another example. Genetic prion diseases are passed from parents to children through genes as an error causes the genes that code prion proteins to make mutant prion proteins that, as the children age, attach to cells in the wrong shapes. Fatal familial insomnia, which is found in a few families worldwide, causes people to be unable to sleep, and eventually leads to death, is one such example. As for sporadic prion diseases, they have no definitive causes. Experts believe they manifest because of mutant genes but are not certain why people acquire the diseases. Roughly 85% of prion diseases are sporadic as their victims are not exposed to infected food and have no family history of prion diseases. *bovine: an animal such as a cow or buffalo *neuron: a specialized cell that is a part of the nervous system