小题1:D
小题2:B
小题3:A
小题4:A
本文讲述了研究表明婴儿令人惊讶的能力。
小题1:考查段落大意题。根据第二第三的内容，尤其是第三段最后一句话，可知答案为D。
小题2:猜词题。通过理解The finding suggests this dancing ability is innate(与生俱来的) in humans, though the researchers aren’t sure why it becomes weaker later in their life.不难看出，it指跳舞能力。
小题3:细节概括题。根据Babies can learn even while asleep, according to a 2011 study. In experiments with 26 sleeping infants, each just 1 to 2 days old，可知A项正确。
小题4:细节理解题。根据文章最后两句话，可知答案为A.