1 . It allows geneticists to make changes to the genome by correcting, adding, d________(删除) or replacing specific parts of the genetic material. (根据中英文提示单词拼写)

2 . In the long term ,people may be at increased risk of having a poor memory,being overweight and ________（患有）a heart attack.（根据汉语提示单词拼写）

3 . In this film, a group of young men spent many years ________ (挖掘) buried treasures but in vain. （根据汉语提示单词拼写）