2. 外语
  3. 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

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

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问题     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【C1】______ consuming all his grain immediately. He can continue to support himself and his family【C2】______ he produces a surplus. He must use this surplus in three ways: as seed for sowing, as an insurance【C3】______ the unpredictable effects of bad weather and as a commodity which he must sell in order to【C4】______ old agricultural implements and obtain chemical fertilizers to【C5】______ the soil. He may also need money to construct irrigation【C6】______ and improve his farm in other ways. If no surplus is available, a farmer can not be【C7】______ . He must either sell some of his property or【C8】______ extra funds in the form of loans. Naturally he will try to borrow money at a low【C9】______ of interest, but loans of this kind are not【C10】______ obtainable.
【C2】
选项 A、only if
B、much as
C、long before
D、ever since
答案A
解析 根据本句含义选用正确的表条件关系的主从连词。only if意为"只有"；long be一fore意为"早在……之前"；ever since意为"自从……"。
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