During the Second World War about 30，000 Jewish people were given the safe asylum in Shanghai by Chinese people and escaped the atrocities of the Holocaust in Europe. One of them is Ho Fengshan who rescued thousands of Jews in Austria from the Holocaust b

During the Second World War about 30，000 Jewish people were given the safe asylum in Shanghai by Chinese people and escaped the atrocities of the Holocaust in Europe. One of them is Ho Fengshan who rescued thousands of Jews in Austria from the Holocaust by （）.
A、hiring them in his factory
B、providing international safety zone in Vienna
C、providing secret passages to Shanghai
D、issuing visas to Shanghai
正确答案：issuing visas to Shanghai