However, Interferons, the drugs most commonly used in relapsing M.S., reduce relapses by about 30 percent, and have not been shown to slow the progression of the disease and disability. The newly approved Aubagio also reduces relapses by about 30 percent, and it has the advantage of being an oral drug.

　　BG-12 is an anti-inflammatory that works by protecting nerves against injury. “The safety track record is well known and appears to be very strong,” said Dr. Robert Fox, lead author of one of the new studies and medical director of the Mellen Center for Multiple Sclerosis Treatment.

　　“It’s a bright day for M.S. patients, but there is a gray cloud in that we still don’t have anything for those with progressive M.S.,” he added.

　　63. Which of the following is NOT the function of BG-12?

　　A. It can slow the progression to disability significantly.

　　B. It can reduce relapses rates in patients with relapsing M.S.

　　C. It can decrease the number of brain damages caused by M.S.

　　D. It can make patients excited and ensure patients have a warm feeling.

　　64. What can you infer from the underlined sentence in the last paragraph?

　　A. BG-12 can relieve the pain from the patients suffering from M.S.

　　B. There is hope but still a long way to find a cure for progressive M.S.

　　C. Scientists can not invent medication for patients with progressive M.S.

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