- 精华
- 0
- 积分
- 1280
- 经验
- 1280 点
- 威望
- 106 点
- 金钱
- 458 ¥
- 魅力
- 249
|
59 METHOD OF REASONING In order to withstand tidal currents ,juvenile horseshoe crabs frequently burrow in the sand .Such burrowing discourages barnacles from clinging to their shells .When full grown ,the crabs can readily withstand tidal currents withoutburrowing ,and thus they acquire substantial populations of barnacles. in areas where tidal currents are very weak, juvenile horseshoe crabs are found not to have significant barnacle populations,even though they seldom burrow 排除出现原文没说过的东西的选项,包括新元素,极端化或夸张的元素,相反的元素,颠倒的元素(E)until they are fully grown, horseshoe crabs shed their shells and grow new ones several times a year. barnacle:附着甲壳动物 significant:重要的;显著的 substantial:很重要的;很可观的,大量的;很有价值的 acquire:(为自己)买到,获得(资产,物品)cling:人,动物)黏着,缠着,紧紧握着 burrow:掘穴, 打洞 crab:蟹;螃蟹 juvenile:青少年(有关)的 |
|