That such a great number of families are still so badly off greatly the researchers.
A. puzzle
B. confuse
C. disturb ed
D. astonishes
网友回答
A. puzzle
B. confuse
C. disturb ed
(答案→)D. astonishes
解析：
这题考查动词词义辨析：A. puzzle使…困惑，B. confuse使…迷惑， C. disturb打扰， D. astonishes使…惊讶，句意是：这么多的家庭还这么贫困让研究人员很惊讶。选D。