【判断题】What is "a wild goose chase"? That's from Shakespeare's play Romeo and Juliet. Years ago, it meant a kind of horse race. But now, it means "a hopeless search for something you cannot find".
【单选题】In a small pilot study, 12 women with endometrial cancer (cancer of the uterus) and 12 women with no apparent disease were contacted and asked whether they had ever used estrogen. Each woman with canc...