1 . Thanks to Tu Youyou’s discovery of qinghaosu, malaria patients all over the world now have had a greatly increased chance of ________ (survive). (所给词的适当形式填空)

2 . We practise earthquake safety ________ (程序，步骤) twice a year, so the kids were calm enough to protect themselves during the earthquake. (根据汉语提示单词拼写)

3 . As the impact of human activities continues to grow and the list of species in danger of ________ (灭绝，绝种) becomes longer, we are left with a question: can we afford to damage the “lungs of the planet”? (根据汉语提示单词拼写)