■点击查看听力答案■
The cloning of human cells provides the potential to find cures and eliminate diseases. The dream of some researchers is to create a utopian world of good health. Others question whether it is right to "Play God" in an attempt to cure the disabilities and diseases of this world.

Some of the great hopes for cloning include the ability to perform transplants, whenever they are needed, using cloned organs. For example, people with lung cancer may simply have their lungs replaced with healthy ones. Scientists also look forward to the day when people in wheelchairs can walk again, and illnesses such as Alzheimer's and Parkinson's Disease can be prevented.

Many people fear the effects cloning could have on our society. They imagine masses of identical people, and the production of "perfect" humans for warfare or slave labor. We might even see headless human bodies being stored at hospitals for their "spare parts." With such thought-provoking possibilities for the 21st century, human cloning will no doubt continue to receive widespread attention and scrutiny.