100个句子记完1000个单词（10）

73. Starting around 7000 B.C., and for the next four thousand years, much of the Northern Hemisphere experienced temperatures warmer than at present.
    大约从公元前【qián】七千年开【kāi】始，在四千年【nián】当【dāng】中，北半球的温度比现在高。
　　
74. When Henry Ford first sought financial backing for making cars, the very notion of farmers and clerks owning automobiles was considered ridiculous.
    当亨利.福特最初制【zhì】造汽车为寻【xún】求资金支【zhī】持时【shí】，农民和一般职员也能拥有【yǒu】汽车的想【xiǎng】法被认为是【shì】可笑的【de】。
　　
75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.
    北美秃头鹰【yīng】的【de】数量一【yī】度很多，但在近四十【shí】年中全北美的秃头鹰数量【liàng】急【jí】剧下降。
　　
76. The beaver chews down trees to get food and material with which to build its home.
    水獭啃倒【dǎo】树木【mù】，以【yǐ】便取食物【wù】并获得造窝的材料。
　　
77. Poodles were once used as retrievers in duck hunting, but the American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets.
    长【zhǎng】卷毛狗曾被用作猎鸭时【shí】叼【diāo】回猎物的猎犬，但【dàn】是美国Kennel Club却不【bú】承认【rèn】它们为猎犬，因【yīn】为它们现【xiàn】在大多数作为宠物饲养。
　　
78. As a result of what is now know in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
    物【wù】理【lǐ】学和化学的一个成【chéng】果是使得科学家们能【néng】在生物学和医学上【shàng】获得【dé】重【chóng】大发现。
　　
79. The practice of making excellent films based on rather obscure novels has been going on so long in the United States as to constitute a tradition.
    根据默【mò】默无【wú】闻的小说制作优秀【xiù】影片在美国由【yóu】来已久，已经成为【wéi】传统。
　　
80. Since the consumer considers the best fruit to be that which is the most attractive, the grower must provide products that satisfy the discerning eye.
    因为顾客【kè】认为【wéi】最好的水果应该看起【qǐ】来也是最漂亮【liàng】的，所以种植者必须【xū】提供能满足【zú】挑剔眼【yǎn】光的【de】产品。