婚姻关系存续期间，双方用夫妻共同财产出资购买以一方父母名义参加房改的房屋，产权登记在一方父母名下，离婚时另一方主张按照夫妻共同财产对该房屋进行分割的，人民法院不予支持。( )

It has been estimated that only 21 percent of______world’s land surface can be cultivated and that only 7.6 percent is actually under______cultivation.

A．/.../
B．the...the
C．/...the
D．the.../