多少热量为1卡？
参考答案：
1克纯水温度升高（或降低）1℃时吸收（或放出）的热
量叫1卡。
After several changes of plane, we finally ______ London on Tuesday morning. [ ]
A. reached
B. got
C. arrived
D. came
MRI对关节积液很敏感，合并出血时TWI和TWI均为高信号。
