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.hybrid □2.pollinate □3.strain
□4.leisure □5.soil □6.celebrity
□7.sorghum □8.broom □9.grain
□10.tunnel □11.wheat □12.flavour
□13.fertiliser □14.pesticide □15.bacterium
□16.digest □17.mineral □18.grocery
□19.organic □20.alleviate □21.vision
□22.tackle □23.boost □24.yield,
