An international research team has found evidence of the Earth's earliest forest trees, dating back 385 million years.Upright stumps of fossilised trees were uncovered after a flash flood in Gilboa, upstate New York, more than a century ago. However, until now, no-one has known what the entire trees looked like.
Two years ago, two fossils were found near Gilboa of trees which had fallen sideways, with their trunk, branches, twigs and crown still intact.American researchers called in Dr Christopher Berry of Cardiff University, an expert who has studied tree fossils around the world for the last 17 years. Dr Berry was able to identify the trunks as being of the genus Wattieza, a tree fern-like plant.Small fragments of Wattieza have been found in the past, but there was no direct evidence of how large the plant could grow. The new specimens show that they reached at least 8 metres in height and formed the first known forests on earth.
Dr. Berry said: "This is a spectacular find, which has allowed us to recreate these early forest ecosystems. Branches from the trees would have fallen to the floor and decayed, providing a new food chain for the bugs living below.""This was also a significant moment in the history of the planet. The rise of the forests removed a lot of Carbon Dioxide from the atmosphere. This caused temperatures to drop and the planet became very similar to its present-day condition."Dr. Berry worked with colleagues from Binghampton University, New York and from New York State Museum, which discovered the two trunk fossils. Their findings are published in the April 19 edition of the scientific journal Nature.

62.The finding near Gilboa two years ago is motst probably remarkable because_______。
A)Upright stumps of fossilized trees were found in the same plae two centuries ago.
B)Researchers had a difficult time determing the fossilized trees.
C)The fossilized trees were identified as being of the Wattieza

D)The fossilized trees have their trunk,braches, and crown still remaing good
63. Dr. Berry was called in to ________.
A) lead the international research team
B) study the upright stumps of fossilized trees
C) identify the fossilized trees
D) confirm the fossilized trees

64. What is significant about the discovery of the sossilized Wattieza?
A) Researchers can determine the size of a fully grown tree.
B) No other fossil of Wattiezza has been found before.
C) Researchers can recreate the early forest ecosystems.
D) The plant formed the first known forests in the world.

65.When were the first known forests likely to exist in the world?
A) Before Wattieza appeared on the earth.
B) When Wattieza grew on the earth.
C) After Wattieza disappeared from the earth.
D) Before the earth entered the Ice Age.

66. What happened after the rise of the first forests in the world?
A) Carbon dioxide was removed from the atmosphere.
B) The earth gradually became cold and entered the Ice Age.
C) The ecosystem was gradually changed and become similar to the one at present.
D) A new food chain was formed for bush bugs.

62. D。题干提问为什么两年前在Gilboa 附近发现的树木化石可能是最不平常的。根据关键词Gilboa 定位到文章第一段第二句和第二段第一句，提到一个世纪前人们只是发现了笔直的树桩化石，直到现在没有人知道完整的树的样子，但是两年前在Gilboa 附近发现的两个化石有完整的树干、树枝和树冠。

63. C。题干提问Dr. Berry被请来做什么。根据关键词 call in 定位到文章第二段第二句 American researchers called in Dr. Christopher Berry… was able to identify the trunks as one of the Wattieza。

64. C。题干提问发现瓦蒂萨树化石有何重要意义。根据关键词 significant 定位到文章第三段，结合上下文得出：Dr. Berry 说这是一个非凡的发现，它能够帮助我们重塑早期的森林生态系统。考生应注意单词 spectacular (壮观的，神奇的)，与题干中的 significant 意义相近。

65. B。题干提问得知最早的森林存在于地球上的时间。根据关键词 the first known 定位到文章第二段最后一句“The new specimens…formed the first kmown forests on earth.”这一句中的 the new specimens 就是指在 Gilboa 发现的树木化石。根据12题得知新发现的树木化石属于瓦蒂萨树。

66. C。题干提问地球上第一座森林出现之后发生了什么。根据关键词 the rise of the first forests 定位到第三段第四句，“森林的出现使得树木吸收了大气中大量的二氧化碳，导致温度下降到适合人类居住的水平，地球的情形与今天很相似。”选项C符合此意。