问题：
【题文】The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of ___ 9-story building.
A．the; the
B．a; a
C．a; the
D．the; a
【题文】The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of ___ 9-story building.
| A．the; the | B．a; a | C．a; the | D．the; a |
参考答案：