Study shows that excessive use of _____ may damage the ecosystem.
举一反三
- It is important to study polar bears to assess the health of the ecosystem on the Arctic, because（） A: they are on the edge of extinction. B: they are on the top of the ecosystem. C: the food chain on the Arctic depends on them. D: there are no other big animals on the Arctic.
- _________ environmental damage is done, it takes many years for the ecosystem (生态系统) to recover.
- Case Study: A pedestrian crossed a road without looking, and consequently was hit by a speeding car. The pedestrian sued the driver for negligence. What defence may the driver use? A: Remoteness of Damage B: Absolute Privilege C: Legalised by prescription D: Contributory Negligence
- 7) a______ wrong or excessive use
- Every minutes is made full ___ of ___ our lessons. A: to use, study B: use, studying C: useful, to study D: use, to study