如图是我国一省级行政单位的轮廓，据图判断，该省级行政单位是（　　）

A．新疆维吾尔自治区

B．内蒙古自治区

C．黑龙江省

D．海南省

34. —Have you thought of a topic for your speech yet?

—No, I__________a lot about it, but I haven’t decided.

A．will think

B．have been thinking

C．had thought

D．was thinking