https://online2.tingclass.net/lesson/shi0529/0001/1240/17-11.mp3
https://image.tingclass.net/statics/js/2012
8. Education is ____ for the development of a country.
A. indispensable B. accountable C. deliberate D. deficient
<indispensable>
indispensable a.不可缺少的 n.不可缺少之物
</indispensable>
<accountable>
accountable 可計(jì)算的
account for 解釋，占多大比重
solar system 太陽系
expand 膨脹
black hole 黑洞
gravity 重力
balance 平衡
collapse 崩塌
</accountable>
<collapse>
collapse 崩潰，坍塌
elapse (時(shí)間)流逝
lapse 墮落
relapse 舊病復(fù)發(fā)，回復(fù)原狀
</collapse>
<deliberate>
deliberate 故意的，深思熟慮的
intention 故意，意圖，目的
intentional 故意的
</deliberate>
