托福機(jī)經(jīng)閱讀：
1. 關(guān)鍵詞：water deposit; delta, downstream/upstream sediments
最后一段有插入提是關(guān)于說The Mississippi River Delta;人們保持channel of The Mississippi River 是為了不讓河水改變到別的地方
2. Silent film and synchronous sound
第一題，愛迪生為什么發(fā)明了Kentucky
為了synchronous sound改進(jìn)的system 有什么缺陷
3. atmosphere of Venus，現(xiàn)在地球上水多，大氣層相對稀薄，金星上大氣層后的多。提出的假設(shè)，很久以前金星和地球有同樣的大氣構(gòu)造，金星上也有水The atmosphere of Venus is very hot and thick提出假設(shè)：在形成初期可能和地球的成分相似，都含有大量水，但是離太陽距離過近，水蒸發(fā)了，連二氧化碳都能因?yàn)楦邏簭氖沂锱艹鰜恚瑴厥倚?yīng)就更強(qiáng)了。
相似： Both Earth and Venus have small amounts of water atmosphere. However, Venus' atmospheric water is about all the water on the planet. Terrestrial planets get much of their atmospheres from gases released from their interiors, primarily through volcanic formation. Volcanoes on Earth release large amounts of both water vapor and carbon dioxide, and it is likely that this is also the case for volcanoes on Venus.
Most of the carbon dioxide on Earth is now dissolved in the oceans and in rocks such as limestone, which is found in the oceans. Venus, however, would have had a higher surface temperature due to its position nearer the Sun: as a result, any liquid water on the plant's surface quickly evaporated, and the carbon dioxide remained in the atmosphere.