【正文】
r n. 市長 18 ? online adj. 在線的 adv. 在線地 More students will take online classes in the future. I’m not used to doing shopping onlin. I think chatting online is a waste time. 19 ? rarely adv. 罕有的; 很少; 不常 I rarely eat in restaurants. 20 ? reuse v. 再利用 reuse an old envelope / a plastic bag 21 ? seed n. 種子 seed corn 22 ? society n. 社會 Many retired people can still contribute to the society with their rich experience. 許多退休的老人還能用他們豐富的經(jīng)驗為社會作貢獻。 3,000 for this used car but it’s worth a lot more.