【单选题】A recent study has provided clues to predator-prey dynamics in the late Pleistocene era.Researchers compared the number of tooth fractures in present-day carnivores with tooth fracturesin carnivores t...
A.
present several explanations for a well-known fact
【简答题】If you want a letter ______, you must keep in mind several rules while ______.A. written; written B. well written; writing C. well writing; writing D. well written; write