【简答题】These studies will yield valuable lemons ________. A) in which to save lives and protect property B) how to save lives and protect property C) in how to save lives and protect property D) about those ...
【单选题】Allie lives 3 km west of Billy's house. Charlie lives 4 km north of Allie's house and 3 km west of Danny's house. What is the distance from Allie's house to Danny's house?