What makes the space shuttle _____ is that it takes off like a rocket but lands like an airplane.
A. exceptional B. strange C. unique D. rare
What makes the space shuttle _____ is that it takes off like a rocket but lands like an airplane.
A. exceptional B. strange C. unique D. rare
C
unique同类事物中独一无二的。如:This stamp is unique; all others like it have been lost or destroyed.