（辨析主题句）Choose the best topic sentence from the four options below. Write the corresponding letter of your choice on the Answer Sheet.
Your choice:
A、 Shopping at a catalogue store isn't as satisfying as going to a regular department store.
B、 The catalogue salesclerks don't seem to know much about the products they sell.
C、 How shopping at a catalogue store compares with shopping at a department store.
D、 We don't get to look at the goods before buying it.
【正确答案】：A
