PROTEAN: IMMUTABLE :: （）

单项选择题SCORNFUL : SNEER ::（）

A．saturnine : groan
B．distressed : rejoice
C．provoked : wink
D．embarrassed : blush
E．bewildered : wail

单项选择题Although scientists have______long the human appendix as______organ, there is a growing body of evidence indicating that the appendix does in fact have a significant function as a part of the body's immune system.（）

A．overestimated … a minor
B．discounted … a vestigial
C．valued … a major
D．ignored … a pivotal
E．studied … an inaccessible