练习材料：
[Day 1755 2019-07-17]
Lesson 22-1 Knowledge and progress 知识和进步
Why does the idea of progress loom so large in the modern world? Surely because
progress of a particular kind is actually taking place around us and is becoming more
and more manifest．Although mankind has undergone no general improvement in
intelligence or morality, it has made extraordinary progress in the accumulation of
knowledge．Knowledge began to increase as soon as the thoughts of one individual
could be communicated to another by means of speech．With the invention of writing,
a great advance was made, for knowledge could then be not only communicated but
also stored．Libraries made education possible, and education in its turn added to
libraries: the growth of knowledge followed a kind of compound interest law, which
was greatly enhanced by the invention of printing．All this was comparatively slow
until, with the coming of science, the tempo was suddenly raised．
任务配置：L0+L1+L4
知识笔记：
loom v. 赫然耸现; (尤指) 令人惊恐地隐现; 显得突出; 逼近; n. 织布机;
manifest v. 表明，清楚显示(尤指情感、态度或品质); 显现; 使人注意到;
adj. 明显的; 显而易见的; n. (船或飞机的) 货单，旅客名单;
morality n. 道德; 道德准则; 道义; 合乎道德的程度; 道德规范; 道德体系;
a kind of compound interest law 一种复利法
comparatively adv. 比较上; 相对地;
tempo n. (乐曲的) 速度，拍子，节奏; (运动或活动的) 速度;
练习感悟：
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