[判断题](35949)( )砂浆的流动性用坍落度表示。
A.正确
B.错误

The history of responses to the work of the artist Sandro Botticelli (1444-1510) suggests that widespread appreciation by critics is a relatively recent phenomenon. Writing in 1550, Vasari expressed an unease with Botticelli’s work, admitting that the artist fitted awkwardly into his evolutionary scheme of the history of art. Over the next two centuries, academic art historians defamed Botticelli in favor of his fellows Florentine, Michelangelo. Even when anti-academic art historians of the early nineteenth century rejected many of the standards of evaluation adopted by their predecessors, Botticelli’s work remained outside of accepted taste, pleasing neither amateur observers nor connoisseurs. (Many of his best paintings, however, remained hidden away in obscure churches and private homes.)
The primary reason for Botticelli’s unpopularity is not difficult to understand: most observers, up until the mid-nineteenth century, did not consider him to be note
A. They are to be fully appreciated.
B. They evolve from an uncertain source.
C. They underlie his personality.
D. They conform to the classical style.