That Africa and South America were once joined can be deduced from the fact that ______.
A: the two continents are still moving in opposite directions
B: they have been found to share certain geological features
C: the African plates has been stable, for 30 million years
D: over 100 hot spots are scattered all around the globe
A: the two continents are still moving in opposite directions
B: they have been found to share certain geological features
C: the African plates has been stable, for 30 million years
D: over 100 hot spots are scattered all around the globe
举一反三
- 6. Since the remains of Mesosaurus have been found in both Africa and South America, Wegener that South America and Africa must have been joined during that period of Earth history. A: criticized B: convinced C: opposed D: asserted
- （）from other continents for millions of years, Australia has varieties of species which can hardly be found in other parts of the world. A: Being separated B: Having been separated C: To be separated D: To have been separated
- It () hot so far this summer. It is reported that it will still be hot in the coming two days. A: had been B: has been C: was D: is
- What has been indicated by this incident A: South Africa is a non-racial democracy. B: Racism is still a problem in South Africa. C: Police in South Africa react quickly to any criminal acts. D: South Africa is still a dangerous plac
- Even though superstitions have been found for thousands of years, many of those beliefs can still be found in modern society.