第一部分：单选. 根据句意，从所给选项中选出最佳选项（每小题1分，共20分）
1. Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.
A. common B. normal C. ordinary D. usual
2. The practice of hanging clothes across the street is a common ______in many parts of the city.
A. look B. sign C. sight D. appearance
3. When ______ different cultures, we often pay attention only to the differences without noticing the many similarities.
A. compared B. being compared C. having comparing D. comparing
4. I can’t say which wine is beat—it’s a (n) _________ of personal taste.
A．affair B．event C．matter D．variety
5. Since the mid-1980's, growing numbers of Asians ______ in New Zealand, and they _____about six percent of the total population.
A. had settled; make of B. have settled; make up C, settled; make up of D. are settling; make up for
