资料：Economicperformanceisimprov-名校题库网

资料：Economic performance is improving in most of the world's leading economies but is still short of a self-sustaining upswing, the Organization for Economic Cooperation and Development said on Wednesday.

In an update to its economic forecasts, the Paris-based international organisation representing advanced economies said that more private sector investment was needed for the expansion to endure, for wages to rise sustainability and for inequalities to be tackled.

Although all leading economies are now recording positive growth, Catherine Mann, the OECD's chief economist, urged governments to “curb your enthusiasm [ because] strong and sustained medium-term global growth is not yet secured”.

The OECD's economic outlook shows upgrades to the 2017 growth forecasts in China, Russia and Europe excluding the UK with the world outlook also appearing stronger in 2018.

World growth should rise from a low of 3.1 per cent in 2016, to 3.5 per cent this year and 3.7 per cent in 2018, the OECD forecast, with the US, the Eurozone, Brazil and Russia contributing most to the improved global outlook.

China's predicted growth rate of 6.8 per cent in 2017 and 6.6 per cent in 2018 has been revised higher by 0.2 percentage points in both years and although India's growth rate has been revised down, reflecting adjustment to its new goods and services tax, it is likely to remain the fastest growing large economy in the world.

Only the UK, which remains embroiled in Brexit negotiations, has a deteriorating outlook. Responding to the OECD's forecast that the British economy will be the slowest growing in the Group of Seven in 2018 having been near the top of the league table in 2016, the British Treasury said it was not complacent.

What is the best title for the passage？

A.The prosperity of the leading economies
B.The engine of the world economy
C.China，the trail blazer of the world economy
D.Global economy improving but lacks self-sustaining upswing

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答案： D

本题解析：

本题考查主旨大意。

【关键词】best title

【主题句】第1自然段Economic performance is improving in most of the world’s leading economies but is still short of a self-sustaining upswing, the Organization for Economic Cooperation and Development said on Wednesday. 经济合作与发展组织（OECD）周三表示，全球主要经济体的经济表现正在改善，但仍缺乏足以自我维持的上升势头。

【解析】题干意为“哪个选项为最佳标题？” 选项A意为“发达经济体的繁荣”；选项B意为“世界经济的引擎”；选项C意为“中国，世界经济的先驱者”；选项D意为“全球经济在增长，但缺乏足以自我维持的上升势头”。根据主题句可知，文章主要围绕着世界经济形势展开论述的，故选项D符合题意。