Even their most ardent champions concede that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation's energy needs.
242. Even their most ardent champions concede that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation's energy needs. (A)that no less than a technical or scientific breakthrough is necessary (B)that nothing other than a technical or scientific breakthrough is needed (C)that a technical or scientific breakthrough is necessary (D)the necessity for an occurrence of a technical or scientific breakthrough (E)the necessity for a technical or scientific breakthrough occurring 答案是C,根据OG的解释双重否定是冗余表达,这好像和ETS一贯思路不一致的说。
51. While Jackie Robinson was a Brooklyn Dodger, his courage in the face of physical threats and verbal attacks was not unlike that of Rosa Parks, who refused to move to the back of a bus in Montgomery, Alabama. (A)not unlike that of Rosa Parks, who refused (B)not unlike Rosa Parks, who refused (C)like (Rosa Parks and her refusal (D)like that of Rosa Parks for refusing (E)as that of Rosa Parks, who refused