Works of art on loan exhibitions are_________ private owners, art dealers or other museums.
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The last paragraph is about________.
Match a sentence part from the left column to one from the right column to make true statements.
若函数f(x)在[0, +∞]内可导，且f`(x) ＞0，f(0) ＜0则f(x)在[0,+ ∞]内有（ ）
A. 唯一的零点
B. 至少存在有一个零点
C. 没有零点
D. 不能确定有无零点
函数y=f(x)在定义域内可导性是（）
A. 一定可导
B. 一定不可导
C. 不一定可导
D. 其他选项都正确
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