有纺土工织物等效孔径O95要求（）。
A.（0.07—0.5）mm
B.≥0.07mm
C.≤0.5mm
D.≤0.07mm
参考答案：A
（-a+2b）（-a-2b）=______．
—Is the girl Mary?
—No, ______ isn't. _______name is Lily. [ ]
A. he, His
B. her; Hers
C. she; Her
D. her, She's
