[单项选择]

{{B}}Genetic Testing{{/B}}
Genetic testing is transforming medicine and the way families think about their health. As science uncovers the complicated secrets of DNA, we face difficult choices and new challenges.
{{B}}About Genetic testing{{/B}}
The year was 1895 and Pauline Gross, a young actress, was scared. Gross knew nothing about the human-genome (基因组，染色体组) project—such medical triumphs, but she did know about a nasty disease called cancer, and it was running through her family. "I’m healthy now," she often told Dr. Aldred Warthin from at the University of Michigan, "but I fully expect to die an early death."
At the time, Gross’s prediction was based solely on observation: family members had died of cancer; she would, too. Today, more than 100 years later, Gross’s relatives have a much more clinical option: genetic testing. With a simple blood test; they can
A. Whether their babies are genetically healthy or not
B. whether they can have a baby
C. when their babies will come into the world
D. whether their babies are boy or girl babies

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