玉树地震后,各界爱心如潮,4月20日 搜索“玉树捐款”获得约7945000条结果,其中7945000用科学记数法表示应为( )(保留三个有效数字)
A:7.94×105
B:7.94×106
C:7.95×105
D:7.95×106
Pigeons ____ ____ ____ a compass inside them which tells them which way is north.
45° 115°
— How much is the scarf?
— ____($110,too expensive)