A-A+
Why may the FDA rescind its approval of Avasti
问题详情
Why may the FDA rescind its approval of Avastin？
A．Because it may cause breast cancer to metastasize to other organs
B．Because it did not keep women alive.
C．Because it may cause side effects.
D．Because its toxicity outweighs its benefits.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
解析：文章第三段提到晚期乳腺癌是指肿瘤细胞已经扩散到身体其他部位，并不是阿瓦斯丁造成的。文章第四段提到阿瓦斯丁并不能延长晚期乳腺癌病人的生命。第五段中提到阿瓦斯丁会带来一些副作用，但归根结底，撤销使用阿瓦斯丁的原因是使用阿瓦斯丁弊大于利。
