【简答题】根据以下材料回答第 1~4 题: Passage Four In 1968,five people were murdered in Northern California.The killer called himself the Zodiac.He either shot or knifed his victims.No one knew when,where,or who the Zodia...
【简答题】It’s impossible to determine how many people would have lost their lives without the contribution of African-American inventor Dr Charles Drew. Charles Drew was born on June 3, 1904, in Washington, DC...