【C4】A．unconsciousB．unawareC．unfamiliarD．unknown

ONE DAY in February 1926 an unknown American writer walked out of a New York snowstorm a

A．A sense of frustration.B．Haunted by the unknown things.C．Confident but moody.D．Succe

The number of teachers in this school（) unknown.A. areB. is beingC. isD. are being

【C12】A．unconsciousB．neglectC．worriedD．curious

This passage mainly tells usA．a story how a previously unknown Leonardo was discovered.B．s

He was hit on the head by a piece of iron and was knocked ______ .A.unconsciousB.subconsci