17.) Ninety per cent of all Pacific salmon were caught are sockeye or pink salmon.
原文：All five species of Pacific salmon -- chinook, or king; chum, or dog; coho, or silver; sockeye, or red; and pink, or humpack -- spawn in Alaskan waters, and 90% of all Pacific salmon commercially caught in North America are produced there.
題目當(dāng)中的關(guān)鍵詞 Ninety per cent/Pacific salmon/sockeye/pink salmon都是原文當(dāng)中的原詞，所以如果不理解句子的意思可能會錯以為答案是TRUE,。但是仔細(xì)分析下,，原文是由“and”并列起來的復(fù)合句，前半句列舉了Pacific salmon的五個品種,，后半句說北美捕捉到的90%Pacific salmon都產(chǎn)自于阿拉斯加,，但是具體這90%是什么品種原文并沒有說明，所以答案是NOT GIVEN,。
27.) In the first paragraph the writer makes the point that blind people
A. may be interested in studying art.
B. can draw outlines of different objects and surfaces.
C. can recognise conventions such as perspective.
D. can draw accurately.
原文From a number of recent studies, it has become clear that blind people can appreciate the use of outlines and perpectives to describe the arrange-ment of objects and other objects in space.
vi ) Controlling pilots' licences
viii ) Setting rules to weather conditions
F ) The FAA then recognised two types of operating environments. In good meteorological conditions, flying would be permitted under Visual Flight Rules(VFR), which suggests a strong reliance on visual cues to maintain an acceptable level of safety. Poor visibility necessitated a set of Instrumental Flight Rules(IFR), under which the pilot relied on altitude and navigational information provided by the plane's instrument panel to fly safely.
On a clear day, a pilot in controlled airplace can choose a VFR or IFR flight plan, and the FAA regulations were divised in a way which accommodates both VFR and IFR operations in the same airspace. However, a pilot can only choose to fly IFR if they possess an instrument rating which is above and beyond the basic pilot's license that must also be held.