【简答题】Listen to the passage and fill in the blanks with the words you hear. Scientists ______1______ animals for many years. In 1952, the first animal, a tadpole, was cloned. Before the _______2______ of Do...
【简答题】Listen to the passage about animal cloning and fill in the blanks . tadpole: 蝌蚪 somatic: 身体的,体壁的 embryonic: 胚胎的 strip: 剥去 gaur: 野牛 traumatic: 创伤的 Scientists have been cloning animals for many years. I...