The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet
21. At the time of the Mexican agrarian revolution, the most radical faction, that of Zapata and his followers, proposed a return to communal ownership of land, to what had been a pre-Columbian form of ownership respected by the Spaniards. (A) land, to what had been a pre-Columbian form of ownership respected by the Spaniards (B) land, a form of ownership of the pre-Columbians and respected by the Spaniards (C) land, respected by the Spaniards and a pre-Columbian form of ownership (D) land in which a pre-Columbian form of ownership was respected by the Spaniards (E) land that had been a pre-Columbian form of ownership respected by the Spaniards 答案是A。 请问to what had been a pre-Columbian form of ownership respected by the Spaniards在句子中是什么成份,是不是 to communal ownership of land的同位语?
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey(E)