The temperature can fall to －50°C. _____ is, 50°Cbelow freezing point.
A. Which B. It C. This D. That
The temperature can fall to －50°C. _____ is, 50°Cbelow freezing point.
A. Which B. It C. This D. That
D
That is = That is to say 换句话说，也就是说。