about wild plants that they decided to make a trip to Madagascar for further research.
A. So curious the couple were
B. So curious were the couple
C. How curious the couple were
D. The couple were such curious
网友回答
A. So curious the couple were
(答案→)B. So curious were the couple
C. How curious the couple were
D. The couple were such curious
解析：考查倒装句。当“so/such+所修饰的成分”放在句首的时候，使用部分倒装的形式。句意：那对夫妻对野生动物是如此的好奇以至于他们决定去马达加斯加做进一步的研究。故B正确。