Thefacthasworriedmanyscientists____the earth is becoming warmer and warmer these years. [ ]

97 Yesterday we received a _____ in whichseveral customers have found fault with our products

Many a woman______ important positions in society, which________impossible in the past．

下列画线字的注音，完全正确的一项是（ ）

Which do you ______, story books or comic books