—Is the flower beautiful?

—Yes, at _____ it's _____ the one you bought for me. [ ]

A. last; as bad as

B. least; no better than

C. last; not better

D. least; no worse than

奥斯特实验表明：通电导体的周围存在____________。如图所示的两个通电螺线管会相互_________选填（“排斥”或“吸引”）。