How will the present-day science develop in the near future, i.e. the next decade or so？
To【36】with, we can expect【37】science to produce a vast increase in entirely new products of all【38】.These will range from light-weight, high-strength materials for【39】in the many specialized branches of engineering,【40】drugs and chemicals with a greatly-increased selectivity 【41】can be used in medicine and agriculture. However, in this【42】case in particular, it may be predicted【43】the wide-spread application and combination of new and more complex products will give【44】to unexpected inter-reactions or side-effects. For this reason, greatly intensified programs of research will be required in【45】to discover and eliminate the harmful results of such combination.
(36)

A. talk
B. begin
C. introduce
D. research