近似数6.0的准确值a的取值范围是[ ]
A.5.5<a<6.4
B.5.95≤a≤6.05
C.5.95≤a<6.05
D.5.95<a<6.05
答案：C
矩形的一条对角线长为8cm，两条对角线的一个交角为60 °，则它的边长分别为（ ）。
—My mother says that we won't go on a trip to Hong Kong Disneyland. I just can't understand.
—_______ You were looking forward to it .[ ]
A. Never mind.
B. Enjoy yourselves!
C. What a pity!
D. Don't worry about it
