[解析]
1. But.考查连词,但是伞实际不是为了下雨发明的,表示转折,故填连词but.
2. Its.考查代词,它的用处,修饰名词,故填形容词性物主代词,故填Its.
3. who.考查连词,who引导的宾语从句,从句中缺少主语,故填who.
4. were.考查动词,the first指代第一批人,所以谓语动词使用复数形式,而且是过去时,故填were.
5. connected.考查非谓语,be connected with:与…相联系,这里是非谓语做后置定语,故填connected.
6. an.考查冠词,honor是以元音开头发音,这里表示泛指,故填冠词an.
7. disappeared.考查动词.根据During the middle ages,可知使用过去时,故填disappeared.
8. sixteenth.考查数词,16世纪晚期,固定用法,故填序数词sixteenth.
9. later.考查比较级,later:后来,稍后,稍后出现在英国.故填later.
10. that.考查连词,it is…that引导的强调句,强调not until the twentieth century, 故只能填写that.