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【单选题】
According to the passage, the first phenomenon to contribute to 'the formation of the Grand Canyon was ______.A.
a series of volcanic eruptions
B.
the collapse of rock formations in the Colorado Plateau
C.
a succession of floods from the Hualapai River and what is now the Colorado River
D.
the earth's internal pressure lifting the Colorado Plateau region
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举一反三
【简答题】简述正确坐姿的基本要领.
【简答题】We provided the sufferers ________ food and clothes. =We provided food and clothes _________the sufferers.
【单选题】This is our first lesson, so I don't know all your names.
A.
简单句
B.
并列句
C.
复合句
D.
并列复合句
【简答题】句型转换:Women often talk about food and clothes. → Food and clothes _____ often _____ about by women.
【单选题】She often provides food and clothes the homeless children.
A.
of
B.
with
C.
about
D.
for
【单选题】First, I don't know whether to take math or computer science.
A.
首先我选择计算机科学，不知道对不对。
B.
首先我不知道我是应该选择数学还是计算机科学？
C.
今天我选择数学不知道怎么样
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