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外语
Biologists have ascertained that specialized cells convert chemical energy into mechanical energy.
Biologists have ascertained that specialized cells convert chemical energy into mechanical energy.
admin
2011-03-26
59
问题
Biologists have
ascertained
that specialized cells convert chemical energy into mechanical energy.
选项
A、determined
B、argued
C、pretended
D、hypothesized
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/dlBO777K
0
考博英语
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