单项选择题

Due in large part to the complexity of its structure--over two hundred bones ______ together by ligaments--the human skeleton is a marvel of architectural construction.

A．binding
B．bound
C．bounded
D．bind
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单项选择题
______ sugar ______ salt is oil water.
A．Not as... as
B．No more than... as
C．Not more than... is
D．Not more than... as
单项选择题
Your mentor and friend ______ to support me in my financial, undertaking.
A．have consented
B．has consented
C．have been consenting
D．are consented
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