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強轉折的詞主要包括but, however, yet, in fact等。這種詞一方面表示其前后連接的內容是相反的關系。另一方面，強轉折的詞強調的是后面的內容，所以but之類的詞后面的內容應該是我們閱讀的重點。特別是如果這種詞出現在一段話的中前部，那么此句多半是整段話的論點，也就是整段的主題句。
需要注意的是，像although, though, despite, in spite of, albeit, while這種詞不同于強轉折的詞，
Congress can pass laws, regulators can beef up enforcement, and shareholders can demand more accountability. But when it comes right down to it, making sure a company is operating well is really an inside job. That’s where internal auditing comes in. It doesn’t sound glamorous, but it’s an expanding field beckoning to people with a lot of pent up we-can-do-better energy. Internal auditors keep an eye on a company’s “controls”-not just financial systems, but all sorts of functions designed to make the business run smoothly and protect the interests of shareholders.
All good fun. But in the aftermath of the Columbia disaster, the value of commercial research on missions has come into question. STS-107-the final flight of the Columbia-had 80 experiments on board, including five that were conducted by the astronauts for private companies, funded almost entirely by NASA. One was for International Flavors & Fragrances (IFF), which extracted the smell of a rose in space and was back seeking new scents. The other commercial experiments involved studies of ways to fight fire using fine Water mist, grow proteins with greater resilience to disease, manufacture crystals for such uses as hydrogen fuel storage and advance cancer-cell research. Is all this worth pursuing in space?
Are Americans a nation of frivolous divorcers who selfishly pursue the bluebird of happiness, oblivious to their children’s needs? Divorce opponents like Judith Wallerstein seem to think most parents see divorce as a marvelous opportunity for the whole family. How immature do they think people are ?All over America, unhappy spouses lie awake at night wondering if they and their kids can afford divorce financially, socially, emotionally. Where will they live, how will they pay the bills, will the kids fall apart, will there be a custody battle, what will their families say? The very fact that so many people leave their marriage for a future with so many pitfalls proves that divorce is anything but a whim. Most people I know who split up (not to mention my ex and me) spent years working up to it.
The truth is that the economic boost from spinoffs, is untraceable. The Berlei bra, for instance, uses a Dupont material called CoolMax, which was derived from a fabric developed to improve thermal clothing by Outlast Technologies in collaboration with NASA’s Johnson Space Center. The proportion of Berlei bra sales accurately described as a NASA “spinoff” is anyone’s guess, but critics say returns can’t even come close to covering the cost of a shuttle flight.
“The very fact that”這樣的結構通常用來提示重要內容的出現。所以當類似的結構出現在段落首末位置的時候，該句極有可能是全段的主題句，也就是主題句。類似的結構還有”The point/problem/concern/idea/key factor is that…”, “what matters/accounts is…”, “what is extraordinary is…”等等。
The Welsh forces in Dyfed-Powys and Gwent both had impressively shape spidergrams thanks to comparatively good records on reducing and investigating crime. The force with the most dimming graph was Avon and Somerset, which was once regarded as a metropolitan force but had been grouped under the new scheme with areas including Norhampton shire and West Mercia which have much lower crime levels. Avon and Somerset, which includes Bristol, pointed out that graph reflected the fact that the force and suffered form a wave of street crime that had subsequently been greatly reduced.
類似的結構還有believe, suggest, conclude, hold, show, reveal, find, find out, discover等。
1. habitatn. the natural home of a plant or animal (動植物的)棲息地或產地: I prefer to see animals in their natural habitat, rather than in zoos.
habitation: The dilapidated hut is unfit for human habitation.
habitable: Their damp house is scarcely habitable.
uninhabitable: The planet Jupiter is uninhabitable.
inhabit: Woodpeckers inhabit hollow trees.
2. infestv. (of something harmful, dangerous, or unwanted) to be present (in a place) in large numbers or to a great degree (大量危害物)出沒于; 侵擾; 騷擾: It would be crazy to swim in these shark-infested waters.
swarm: The place was swarming with tourists.
teem: This river teems with all kinds of fish in summer.
overrun: The stables are overrun with rats.
beset: The plan was beset with difficulties from the beginning.
3. lifespann. the average length of life of a sort of animal or plant or the time for which a material object will last (動植物的)平均壽命; (物品的) 使用年限: Men have a short lifespan than women.
life expectancy or expectation of life 預期壽命; 平均(期望)壽命:
Life expectancy for men is about 78 years in Japan.
span n. 指一段時間或(橋梁)跨度/全長: attention span; memory span;
an unbroken span of concentration; The bridge crosses the river in a single span.
span v. 跨越/橫跨; 延伸/貫穿: His interests spanned a wide range of
subjects. The game has a history spanning three centuries.故lifespan的直意為生命的跨度
4. metabolismn. the system of chemical activities by which a living thing gains power(energy), esp. from food 新陳代謝: The metabolism is slowed down by extreme cold.
metabolic: People who have inherited a low metabolic rate will gain weight.
metabolize: Diabetics cannot metabolize glucose properly.
5. torpida. (esp. of an animal that sleeps through the winter) having lost the power of feeling or moving; lazy or inactive; moving or thinking slowly (冬眠動物)失去活動能力的; 處于蟄伏狀態的: The heat and humidity made us feel torpid.
lethargic: The weather made her listless and lethargic.
sluggish: sluggish traffic; a sluggish economy
dormant: During the winter the seeds lie dormant in the soil.
latent: These children have a huge reserve of latent talent.