A recent study of the atmosphere over the Arctic area near the North Pole showed extreme thinning of the ozone. Officials from the American space agency said the latest study is a result of the largest campaign yet to measure ozone amounts and changes in the Arctic area. NASA researcher Paul Newman said some of the measurements show ozone in the Arctic decreased about sixty percent between January and the middle of March. These measurements are similar to the ozone losses observed in this area a few years ago。
Other studies have shown that man-made chemicals were destroying ozone in the atmosphere. An international agreement halted production of the most harmful chemicals. The new findings support the idea that recovery of the ozone layer may be delayed。
Questions 26 to 28 are based on the passage you have just heard。
26. What is the passage mainly about?
27. Where can ozone be found useful to life according to the passage?
28. When did ozone problems first become known?
Passage Two
Trade between countries is one of the most important economic activities in the world today. The U.S. has many trading partners; one of the most important is Japan. The trade between the two countries amounts to several billion dollars a year. Many U.S. banks therefore have offices in Japan, particularly in Tokyo and Osaka, the largest cities. Jean McPherson is the manager of one of those for branch banks in Tokyo。
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