单选题According to this text, piloted space missions will need to be ______.A more exciting than earlier film versions.B supported by international organizations.C more cost-effective than they appear to be at present.D financed by individual governments.
题目
单选题
According to this text, piloted space missions will need to be ______.
A
more exciting than earlier film versions.
B
supported by international organizations.
C
more cost-effective than they appear to be at present.
D
financed by individual governments.