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This book is written specifically as a preparation text for the TOEFL Computer-Based Test (CBT), and the question types are based on the CBT format of the TOEFL test. | Part V EOg 9MA1 LT i etteP ife TStTai Lieu Du Hoc at www.tailieuduhoc.org 9. The word they in the second sentence of paragraph two refers to A. salamander embryos. B. young. C. forms of algae. D. sunlight. 10. Which of the following does the author imply in the first two sentences of paragraph two A. The life forms in the pool live in water their entire lives. B. Some of the life forms live in water first and later on land. C. The life forms found in the pool do not require oxygen to live. D. Algae is strictly a food source. Passage 2 Scientists have experimented with a new procedure for alleviating the damage caused by strokes. Strokes are frequently caused by a blood clot lodging in the tree of arteries in the head choking the flow of blood. Some brain cells die as a direct result of the stroke but others also die over several hours because the proteins spilling out of the first cells that die trigger a chemical chain reaction that kills the neighboring cells. The current method of reducing the amount of damage is to give a clot dissolver known as TPA as soon as possible. But generally TPA is not given to the patient until he or she reaches the hospital and it still does not immediately stop the damage. The new technology still in the research stage involves chilling the area or the entire patient. It is already known that when an organ is cooled damage is slowed. This is why sometimes a person who has fallen into an 11. The word recurrent in the last sentence of paragraph one means most nearly the same as A. moving. B. recurring. C. stagnant. D. warm. icy pond is not significantly harmed after being warmed up again. The biggest issue is the method of cooling. It is not feasible to chill the head alone. Doctors have chilled the entire body by wrapping the patient in cold materials but extreme shivering was a problem. The new idea is to cool the patient from the inside out. Several companies are studying the use of cold-tipped catheters inserted into the artery in
