A-A+
Many researchers are currently trying to______
问题详情
Many researchers are currently trying to______.
A．use animals involved in research more effectively
B．slow down the transition for some experiments
C．challenge the scientific value of animal testing
D．raise the cost of using any animals in research此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：细节题。根据文中第二段的“That is why many researchers are working on ways of reducing the number of animal experiments needed and of making those that still happen more effective．”可知，这说明了为什么很多研究人员正采取措施来减少需要用动物做的实验的数量，并使那些仍在做的动物实验更有成效。因此A项正确。
