哪一种物质是体内氨的储存及运输形式（）
A.天冬酰胺
B.谷胱甘肽
C.谷氨酰胺
D.酪氨酸
E.谷氨酸
参考答案：C
使用千分尺时，用等温方法将千分尺和被测件保持同温，这样可以减少温度对测量结果的影响。
Susan Jones was at the bus stop well on time to take the 7:01 bus, but she had to miss her breakfast to do it.
A．catch up with
B．catch
C．run up to
D．be catching
