[解析]
(1)B.词义猜测题。根据文章第三段的When it was rediscovered a decade later,it hadn't dried up or degraded at all.当它十年后被重新发现时,凝胶根本没有干枯或退化。可知,Miyako惊讶的是它仍然具有很高的粘性。A.Hardness坚硬;B.Stickiness粘性;C.Flexibility灵活性;D.Purity纯度。故选B.
(2)D.细节理解题。根据文章第三段的His particular contribution to the field involves a gel,one he'd considered a mistake 10 years before and stuck in a storage cabinet.When it was rediscovered a decade later,it hadn't dried up or degraded at all.他对这一领域的特殊贡献是一种凝胶,10年前他认为这是一个错误,并被放在储藏柜里,10年后重新发现时,它根本没有干涸或变质。可知,Miyako是偶然间发现凝胶这种特殊特性的。故选D.
(3)D.细节理解题。根据文章倒数第二段的The scientists looked at the hairs under a scanning electron microscope and counted up the pollen grains attached to the surface and found that the drones whose horse hairs had been coated with the gel had about 10 times more pollen than those that had not been coated with the gel.科学家们在扫描电子显微镜下观察了这些毛发,并对附着在表面的花粉粒进行了计数,发现那些马毛上涂有凝胶的雄蜂的花粉量大约是没有涂有凝胶的雄蜂的10倍。可知,带凝胶的马毛附着在上面时,雄蜂最擅长收集花粉。故选D.
(4)A.推理判断题。根据文章最后一段的There's a lot of work to be done before that's a reality.在投入使用之前,还有很多工作需要做。可知,这种无人机还未投入使用。故选A.