It takes about six months to train a dog to sit down, bark or otherwise indicate that a sample contains cancer cells. Researchers say if further tests prove dogs to be reli...
17、More and more people are signing up for Yoga classes nowadays, ___ advantage of the health and relaxation benefits. A. taking B. taken C. having taken D. having been taken 18、My cousin came to see me from the country, ___ me a full basket of f...
18.Having no money but anyone to know it,the old man had to say that he had already had dinner. A.not want B.not wanting C.wanted not D.wanting no 19.That naughty boy said that he just enjoyed people who are shy and reserved...
更多内容请点击：Dogs Being Trained to Detect Cancer 推荐文章