Astronauts in a spaceship have to _______weightless conditions _______are quite different from ______are on the earth. 

A．do with; which; those

B．deal with; that; that

C．solve; that; what

D．face; which; these

小明到广州旅游，特地来到了黄花岗烈士墓前悼念英雄。这些英雄是在（）

A.鸦片战争中为国捐躯的

B.辛亥革命中壮烈牺牲的

C.国民革命运动中英勇就义的

D.抗日战争中壮烈殉国的