碳-12原子的质量为1．993×10-26 kg，某原子的相对原子质量是80，则该原子的实际质量是________kg。
1．329×10-25
She insisted that we _____ the source of the river and begin our journey there. [ ]
A. find
B. found
C. would find
D. were to find
当侧拉门打开或关闭不良时，车侧显示灯（）。当侧拉门关闭良好时，车侧显示灯（）。
