Polar bears have evolved bodily features to stay warm
举一反三
- Polar bears (北极熊) need ______ conditions, so they are also suffering because of global warming. A: comfortable B: unfortunate C: warm D: freezing
- By saying "Spring is usually prime food time for 1,200 polar bears" ( Line 1, Para. 1 ), the author means that ______. A: spring is usually a good time for polar bears to carry out their mating rituals B: the polar bears usually eat a lot in the spring C: spring is generally a good time to hunt polar bears D: polar bears usually hibernate in the spring
- How is the future of polar bears?
- The polar bear evolved from brown bear ancestors.
- Due to global warming, thefor polar bears is shrinking, causing the number of polar bears to keep decreasing. A: habit B: habitat C: apparatus D: habitant