【单选题】The best title for this passage is ______.
A.
The Origin of Life on Earth
C.
The Discovery of Life on Earth
D.
The Preservation of the Past Life on Earth
【单选题】The best title for this passage would be ______.
A.
Is There Life on Mars?
C.
Mars, A Dead Planet in the Space
D.
Future Colonies on Mars
【单选题】The best title for the passage is __.
【判断题】最常引起胃粘膜炎症的药物是非甾体类抗炎药。()