Experiments have to be made under carefully _____ conditions .A.treatedB.suppliedC.re

To be honest, after many years of hard work, tears and disagreements, I have made it through.（)

It can be learned from the text that the teachers ban harmful experiments to animals in or

What did the UN and aid agencies do for the disease？A．They made more efforts to find more

I certainly didn t appreciate______when I made mistakes.A．to be accusedB．having accusedC．t

We have made up laws to protect the water from being polluted and the animals _____

Experiments have shown that contrary to our expec