问题如下：
4. Based upon Exhibit 2, the least likely reason for the current pace of GDP growth in Country D is:
选项：
A.a persistently strong currency.
B.strong manufacturing exports.
C.strong natural resource exports.
解释：
B is correct.
Country D is a country with abundant resources and has developed the economic institutions necessary for growth, yet the country is experiencing slow economic growth. It is likely that Country D is experiencing the Dutch Disease, where currency appreciation driven by strong export demand for natural resources makes other segments of the economy, in particular manufacturing, globally uncompetitive. Strong manufacturing exports would indicate that Country D is globally competitive and likely to have adopted leading edge technology. Thus, it is unlikely that the slow growth reflects inability to maintain productivity growth. Similarly, strong exports would suggest adequate demand for its products. Thus, strong exports are unlikely to be the cause of slow growth.
考点 ： 荷兰病 （ Dutch Disease ） 的现象
解析 ： 荷兰病是指由于一国自然资源非常丰富，所以它出口自然资源 ， 导致货币汇率上升 ，因此A和C的说法本身没有毛病，但是本题是要我们选择错误的选项，所以这两者排除。
由于汇率的上升，因而该国工业出口品对于外国人就变贵了，降低其出口竞争力，所以是减少该国工业品的出口 。荷兰病 也是一种对丰富的资源过分依赖的现象 。B选项说法错误，入选。
题干本身提到这个国家是一个developed economic institution，我理解的是既然已经是发达的经济制度，荷兰病还会影响它吗？
