18、 Recent engineering developments have made _____ to recycle coffee ashes into reusable fabric. (A) possible, and (B) it is possible (C) the possible (D) it possible

8、 The latest prediction for the earthquake is that the solar tides trigger the occurrence of the big earthquakes. The evidence based on the historical account is _____. It is supported by the correlation of the full moon and huge tides in the documented catastrophes. (A) exquisite (B) suspicious (C) compelling (D) paradoxical