Scientistshav的精选

问题详情：动词应用阅读下面短文，用括号内所给动词的适当形式填空。（必要时应加助动词或情态动词）Scientistshavealwayswantedtoknowmoreabouttheotherworldinspace.,Theyhavelookedatitthroughtelescopes(望远镜)andinthi...