Computers_______ many things and we_______ these modern machines.
A．a(chǎn)re used to doing; are used to use
B．a(chǎn)re used to do; are used to using
C．used to do; are used to using
D．a(chǎn)re used to do; used to use
B

試題分析：句意：電腦用來(lái)做許多的事情，我們習(xí)慣于使用這些現(xiàn)代的機(jī)器。be used to do sth,被用來(lái)做……，be used to doing sth 習(xí)慣于做……，used to do sth,過(guò)去常常做某事。根據(jù)句意，故選B。
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