—Could you tell me _______, Mary?—Of course. Go straight, and you’ll see it on your right.
A：where is the cinema
B：where the cinema is
C：where was the cinema
D：where the cinema was
化学是研究物质的____ 、____ 、____ 以及____ 的科学．
世界上人口的分布不均匀，下列地区中人口稠密的是（ ）
