2014
高考英语阅读理解抓分练习(20)及答案阅读理解 a new oral medication to treat patients in the early stages of multiple sclerosis(多发性硬化) has shown considerable promise in two clinical trials, researchers announced on wednesday. the medication is on track to become just the third oral drug available to m.s. patients, and potentially the safest and most effective, experts said. the second oral drug,