单项选择题

Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
Passage One

Science for self-reliance has, in recent years, become a matter of great concern for Third World and developing nations. These nations increasingly realize that science is the key to material development in their society and that without it, industrial, social and technological progress would be impossible. Many leaders of formerly colonized nations have cried out for the development of the scientific and technological skills among their peoples. With such skills, these nations will be better able to utilize the resources which their own lands supply. There exists an acute need for scientists, engineers, technicians, economists, physicians, lawyers skilled in domestic and international law, and most importantly, perhaps, teachers and administrators with a commitment to sharing their skills with the underdeveloped nations. These nations would then be able to devise educational strategies and techniques needed to teach their students essential skills. Science for self-reliance: Perhaps this might be a good slogan for Third World nations looking to improve their positions among other nations, as well as the lives of their citizens.

The major concern expressed by underdeveloped nations regarding current economic conditions is that ______.