Some people say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.

A．assumption

B．arrangement

C．assistance

D．appointment

“善师四夷者，能制四夷；不善师夷者，外夷制之。”这种思想是_______在他的一书中最早提出来的。

A．魏源《海国图志》

B．康有为《孔子改制考》

C．容闳《西学东渐记》

D．洪仁玕《资政新篇》