Ⅰ.阅读词汇·读懂
默想下面单词的词性及含义，不会的在□中做出标记并核对识记。
□1.astronaut □2.procedure □3.ongoing
□4.rocket □5.gravity □6.frontier
□7.orbit □8.giant □9.leap
□10.mankind □11.agency □12.data
□13.spacecraft □14.spacewalk □15.jade
□16.dock □17.solar □18.soap
□19.towel □20.microwave □21.tissue
□22.fatal □23.highend □24.monitor
□25.foam □26.pillow □27.smartphone
□28.closing □29.mystery □30.oxygen
