Change, or the ability to {{U}}(31)
{{/U}} oneself to a changing environment is essential {{U}}(32)
{{/U}} evolution. The farmer whose land is required for housing or industry
must adapt himself: he can transfer to another place and master the problems
{{U}}(33) {{/U}} to it; he can change his occupation, perhaps
{{U}}(34) {{/U}} a period of training; or he can starve to death. A
nation which can't adapt its trade or defense requirements to {{U}}(35)
{{/U}} world conditions faces an economic and military disaster. Nothing is
fixed and permanently stable. {{U}}(36) {{/U}} must be movement forward,
which is progress of a sort, and movement backward, which is decay and
deterioration. In a changing world, tradition can be a force for
good or for evil. {{U}}(37) {{/U}} long as it offers a guide, it helps
the ignorant and the uninformed to take a step {{U}}(38) {{/U}} and,
thereby adapt themselves to {{U}}(39) {{/U}} circumstances. But if we
make an idol of tradition, it ceases to be a guide. It becomes an obstacle
{{U}}(40) {{/U}} on the path of course. Man is to accept the help which
tradition can give but to be well aware of its limitations in a changing
world.
【正确答案】
C
【答案解析】[注释] adapt oneself to 为常用词组，表示“使自己适应……”。在阅读句子时，应注意下文中反复出现了该词，抓住这一线索，就可选出正确答案。A. change(变换)，B. fit (与……相称，使符合)，D. adopt(采取，采纳；领养，收养)。
【正确答案】
B
【答案解析】[注释] be essential to (for)...为固定搭配，意为“对于……是不可少的”。句中指的是“对于发展来说是必不可少的”。同义词组为be vital to。还要掌握二者在下面结构中的用法：It is+ essential/vital+ that从句，该结构的主语从句中要用(should)+V.形式。