主句主语是style and choices,谓语动词应该用复数，排除AC；
比较的是过去和现在；they指代的是style and choices；
D it不能指代style and choices
- 【OG18-P680-668题】In a review of 2,000 studies of human behavior that date back to the 1940s, two Swiss psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size, none could be taken seriously.
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- The passage provides information to support which of the following statement about La Nina?
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