Passage 2  It is difficult to even imagine what __26__ the devastation would be if a solar super storm destroyed all ofour electrical grids. How long would this last? No one is sure of the time frame, but we could be withoutelectricity for weeks __27__ . A solar super storm would __28__ havoc on our banking system. No one would beable to use credit cards. Commerce and trade as we know it would completely disappear. The ability to buyfood or gas using a credit card would come to __29__ . Almost everyone on the planet would be caught off guardsince, in this modern age, it is rare to carry large amounts cash. If this __30__ a science fiction story, an actionhero might save the day. In this case, the heroes might be the satellites that accurately predict the storm!
【題組】26.
(A) the full extent of
(B) is the full degree of
(C) the full degree
(D) the whole extent for