The most______(convince)evidence of black holes comes from research into binary star systems.
第1题:
A、comes; is
B、will come; will be
C、comes; will be
D、will come; is
第2题:
EBM(EvidenCe—based MediCine)( )。
第3题:
第4题:
A、had come
B、came
C、would come
D、comes
第5题: