求解OG13 CR57题

深蓝的蓝zg

In order to withstand tidal currents, juvenile horseshoe
crabs frequently burrow in the sand. Such burrowing
discourages barnacles from clinging to their shells.
When fully grown, however, the crabs can readily
withstand tidal currents without burrowing, and thus
they acquire substantial populations of barnacles.
Surprisingly, in areas where tidal currents are very
weak, juvenile horseshoe crabs are found not to have
significant barnacle populations, even though they
seldom burrow.

Which of the following, if true, most helps to explain
the surprising finding?

(A)Tidal currents do not themselves dislodge
barnacles from the shells of horseshoe crabs.

(B)Barnacles most readily attach themselves to
horseshoe crabs in areas where tidal currents
are weakest.

(C)The strength of the tidal currents in a given
location varies widely over the course of a day.

(D)A very large barnacle population can significantly
decrease the ability of a horseshoe crab to find
food.

(E)Until they are fully grown, horseshoe crabs
shed their shells and grow new ones several
times a year.
我不明白A为什么不对
A说海浪不是阻止藤壶粘附在壳上的唯一因素,所以没有海浪藤壶粘附的藤壶数量也可能很少不是么

vitahee

evyren 发表于 2012-12-5 12:52
这道题很绕但是想明白还蛮简单的！！1.小马要打洞 所以 barnacles减少2.大马不打洞 所以 黏在他身上的barna ...

感谢这位童鞋的回复！！茅塞顿开嘻嘻

joyyaya

wellsli 发表于 2013-7-16 15:04
LZ对A的翻译和我烦了一样的错误：

原句没有only，所以X do not themselves dislodge不是“X 不只是自己驱 ...

我不是楼主，但是我也是这里犯了一样的错误，多谢你解答了

wellsli

LZ对A的翻译和我烦了一样的错误：

原句没有only，所以X do not themselves dislodge不是“X 不只是自己驱逐”      没有这个“唯一or只有”

evyren

Tidal自己不驱赶,那tidal的大小就不会影响barnacle的多少

evyren

这道题很绕但是想明白还蛮简单的！！
1.小马要打洞 所以 barnacles减少
2.大马不打洞 所以 黏在他身上的barnacles多
3.小马在潮弱的地方不打洞 黏的barnacles也少 问：为什么大马小马都不打洞但是结果却不一样！