【单选题】听力原文:F: If this weather keeps up, I'm going to have to buy a warmer coat. M: Sounds like a good idea. Spring is still a long way off, you know. Q: What does the man mean? (13)
A.
He will buy a warmer coat, too.
B.
He doesn't think it's necessary to buy another coat.
【简答题】One of the great mystery of modern biology is how 【M1】______ proteins—the strings of amino acids that are the substance of all living things—fold into precise and complex shapes when they created insi...