For each numbered blank in following passage, there are four choices marked [A], [B], [C] and [D]. Choose the best one and mark your answer on ANSWER SHEET 1 by blackening the corresponding letter in the brackets with a pencil. (10 points)
If a farmer wishes to succeed, he must try to keep a wide gap between his consumption and his production. He must store a large quantity of grain __41__ consuming all his grain immediately. He can continue to support himself and his family __42__ he produces a surplus. He must use this surplus in three ways: as seed for sowing, as an insurance __43__ the unpredictable effects of bad weather and as a commodity which he must sell in order to __44__ old agricultural implements and obtain chemical fertilizers to __45__ the soil. He may also need money to construct irrigation __46__ and improve his farm in other ways. If no surplus is available, a farmer cannot be __47__. He must either sell some of his property or __48__ extra funds in the form of loans. Naturally he will try to borrow money at a low __49__ of interest, but loans of this kind are not __50__ obtainable.