These large-scale underground blazes cause the ground temperature to heat up and kill surrounding vegetation, produce greenhouse gases and can even （） forest fires.

单项选择题He did not want to be （） by the majority. He felt that various distinguished cultures could offer a greater contribution to progress than a single culture could.

A. assimilated
B. afflicted
C. enraged
D. isolated

单项选择题In theory, millions of people suffering devastating diseases may one day be helped or even cured with treatments derived from human embryonic stem cells, but human embryos must be destroyed to obtain these stem cells. So research involving them is （） in controversy, with each side arguing passionately for the rights of the sick or the rights of the unborn.

A. refuted
B. modified
C. marred
D. mired