The great size of the volcanoes and the ______ of their lava flows is considered an indication that the crust of Mars is fixed.
A: explosion
B: exploit
C: extent
D: exposure
A: explosion
B: exploit
C: extent
D: exposure
举一反三
- In this mountain area, two volcanoes have been _____ lava (熔岩) for a week. It is very dangerous.
- In this mountain area, two volcanoes have been _____ lava (熔岩) for a week. It is very dangerous. A: evaluating B: examining C: ejecting D: equipping
- ______ to lead is known to damage the brains of young children. A: Extent B: Exposure C: Extension D: Extraction
- The project was considered ________ . A: a great successful B: great success C: a great success D: great successful
- Many species of animals which once lived on the earth are no loner ______. A: in exhaust B: in existence C: in extent D: in exposure