It is such a modem machine ____few of the workers know how to operate it.
A．whichB．thatC．a(chǎn)sD．the one
B
考查定語從句。such修飾先行詞時，定語從句引導(dǎo)詞用that或as。當(dāng)從句不缺少成分時，用that，從句缺少成分時，用as作主語或賓語。句意“它是一臺如此時新的機器，以至于這些工人中幾乎沒有人會操作它�！睆木洳蝗鄙俪煞郑胻hat。故選B。
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