A-A+
根据听到的内容作答____. A) There are 250 million plants
问题详情
根据听到的内容作答____. A) There are 250 million plants eaten by insects. B) There are fewer plants than 250 million years ago. C) They have their way of guarding against insects. D) They have a better immune system than before.请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:C