—I'm worrying about the coming examination.I'm afraid I cannot pass it.
—________!I'm sure you'll make it.
A:Go ahead
B:Good luck
C:No problem
D:Don't lose heart
把盛有5g16%的NaOH溶液的短试管放入盛有10g16%的CuSO4溶液的锥形瓶里,如图所示.倾斜锥形瓶直到使两溶液充分混合,混合后不可能的是( )
读“中国某区域图”,完成小题。