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After determining the levels of calcium carbonate and the types of fossilized algae present in core samples taken from the bottom of Lake Titicaca in the Andes, a group of scientists was able to reconstruct the history of precipitation in tropical South America over the past 25,000 years.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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原句句子结构：After determining the levels of ...and the types of ..., a group of scientists was able to reconstruct the history of...
原句逻辑语义：在确定从 Lake Titicaca in the Andes底部采集回来的样品中碳酸钙的水平和藻类化石的类型，一些科学家们能够重建沉淀在热带南美洲过去25000年的历史。
A.正确；determining的逻辑主语是scientists;
B.主句应该要立马给出主语，it was possible...没有立马给出；
C.无主句；
D.the levels of...and what types不平行；主句没有立马给出主语；
E.错误同D不平行；
286453gff
a group of scientists was????was????
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2021-04-15 02:11:42
324899shrb回复286453gff
是对的，很迷幻，a team of 是复数，a group of是单数
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2022-07-18 23:12:04
221503xmhh
the levels of AND 后面一定是the types of，排除D、E。接着读我倾向that从句，再接着读，after determing后面的主句一定要有主语，看逗号后面的第一个词，分别是a group of sci, it, that。秒排B、C。
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2021-02-10 19:19:29
杨淋清
为什么a group of scientists后面加的是was？
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2019-10-21 16:32:59
进步大于完美
a group of scientists后面＋单数吗？
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2018-05-15 18:00:27
默默
是人决定，所以高清非谓语的主语
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2018-04-09 08:01:55
拽mat
为什么A 的present 不需要是presented？
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2018-04-02 13:21:51
子璐回复拽mat
present做形容词，后置定语，意为现存的
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2018-07-16 21:17:19
CAT
笔记： and 前后结构的必须同为句子，同为名称 。必须对称
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2016-05-21 20:55:47
kisenana
determining 的主语应该是a group of scientists，排除BCD
选项A 正确
选项E （the levels of calcium carbonate） and （what the types of fossilized algae ）这里and前后不平行
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2015-12-07 14:57:51
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句子改错SC
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