CIBC successfully used a seed-feedig weevil, native to Mexico, to control the obnoxious parthenium weed, known to exert devious influence on agriculture and human health in both India and Australia.
PET阅读部分增加了长难句，对孩子词汇和语法的积累要求更高，而词汇更是重中之重。PET词汇量一般是3500-4000左右。所以最核心的要求就是小朋友们要有“扎实，务实”的词汇积累。那么有针对性地解决阅读题中的高频词汇，便能扫清阅读障碍。
