为了防止丢失，旅游者的护照、回乡证和集体签证，在办完手续后，可以保留在导游人员手中。 ( )
参考答案：错
If penicillin had not been available, many people _____ from sickness or even small wounds.
A．would die
B．would have died
C．will have died
D．might die
在海外华人中广为流传的一首思乡名曲《橄榄树》的词作者又是谁？
