With ________ (气温下降得如此之快) , we couldn’’t go on with the experiment.

A．It is quite cold in London now.
B．The man is planning to visit London.
C．The woman will stay in London for a long time.
D．The woman likes the weather in London very much.

A．it is merely a combination of carbonated water, sugar, acid and flavourings
B．it may be harmful to teeth
C．it doesn’’t contain artificial sweeteners
D．it has some stimulating effect