如果下面哪一个句子对所提出的证据解释得更多,文章就会得到改进。
你的答案:
“含有矿物质的水在巨大的压力下慢慢地挤进倒下的帝王蝶的树干、四肢和根部。最终,木质材料逐渐被二氧化硅取代,二氧化硅是一种岩石。”
你的答案:
这时,灿烂的太阳又一次照在了树上。它们不再是植物王国的统治者,而是作为玛瑙、碧玉、蛋白石和其他形式的二氧化硅永存。”
你的答案:
“曾几何时,它们是巨树森林的一部分。他们骄傲地昂首挺胸,俯瞰周围的土地,但他们被某种自然的力量征服并打倒了。”
你的答案:
“石化森林”这个名字有点用词不当:“森林”这个词暗示着挺立的树木,但这些树木很久以前就倒下了,被石头保存了下来。曾经,它们是巨树森林的一部分。”
正确答案:
“这是一个巨大的酸洗缸,木头在这里慢慢变成了活的宝石。我们之所以能断定这一点,是因为该地区仍然存在火山锥和矿泉。”
解释:
“石化森林”这个名字有点用词不当:“森林”这个词暗示着挺立的树木,但这些树木很久以前就倒下了,被石头保存了下来。曾经,它们是巨树森林的一部分。”-These sentences go together well and neither seems to present evidence, so this isn't the correct answer.
这时,灿烂的太阳又一次照在了树上。它们不再是植物王国的统治者,而是作为玛瑙、碧玉、蛋白石和其他形式的二氧化硅永存。”-These sentences conclude the passage. They are primarily descriptive, and neither presents evidence supporting a claim.
“曾几何时,它们是巨树森林的一部分。他们骄傲地昂首挺胸,俯瞰周围的土地,但他们被某种自然的力量征服并打倒了。”-The first sentence in this pair tells readers that the petrified wood found in the Petrified Forest of Arizona was originally part of a forest. The second sentence personifies the trees as it describes them being knocked down. This doesn't seem like the correct answer either, as no evidence for a claim is presented.
“含有矿物质的水在巨大的压力下慢慢地挤进倒下的帝王蝶的树干、四肢和根部。最终,木质材料逐渐被二氧化硅取代,二氧化硅是一种岩石。这些句子出现在文章描述石化过程的时候。它列出了这一过程中的两个连续步骤,但没有声明和证据。
“这是一个巨大的酸洗缸,木头在这里慢慢变成了活的宝石。我们之所以能断定这一点,是因为该地区仍然存在火山锥和矿泉。”-This is the correct answer! The first sentence describes the area in the Petrified Forest of Arizona was "a vast pickling vat" in which conditions were right for petrification to take place. The second sentence states that the reason we know this to be the case is that "volcanic cones and mineral springs still exist in the area." The passage does not make it clear why the presence of volcanic cones and mineral springs means that the area had conditions in which petrification could take place. If this connection were explained more clearly, the passage would make more sense to readers and be improved.