提高自己堆场难句的理解能力对提升
16.Just as plant species native to regions with browsing mammals evolved many natural antibrowser defenses (such as sharp spines and toxic chemicals), so humans in malarial regions have evolved dozens of chemical defenses against malaria.
# 就像植物物种/生长在这样的地区/有以植物为食的哺乳动物的/进化出 /很多自然的针对以(他们为食的)捕食者的防御措施/ (比如锋利的刺和有毒的化学物质)，所以人类/生活在疟疾流行的地区的/已经进化出几十种化学物质/抵抗疟疾。
17.The expected rise in the price of oil could have a serious impact on industrialized nations and severely diminish the possibility of having an economy free of inflation.
# 没有预想到的增加/在价钱上/石油的/产生了一个严重的影响在工业国 /并且严重减少了这个可能性/有一个这样的经济的/没有通货膨胀的。
18.Recent excavations suggest that the ancient peoples of the Italian peninsula merged the cult of Damia---a goddess of fertility and the harvest--- with that of Venus.
# 进来的挖掘/表明古代的人/意大利半岛的/融合这样的崇拜/达米尔的
/--(达米尔)是一个女神/(象征)孕育和收获的—以及维纳斯的(崇拜)。
19.Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development.
# 生物学家/相信他们已经发现了其中的一种/这样的物质中的/它可以辨别一个人的基因/在这样两种情况下/当开始变得活跃/和保持不变时/在早的时期/一个胚胎发展的。
20.According to a panel of health officials, there has been a great deal of confusion in the medical profession about whether obesity is a biological disorder posing serious health risks or a condition more related to appearance than to health.
# 根据一个专门小组/健康方面的官员组成的/，已经有大量的困惑/在医学界/关于肥胖是一个生物学的紊乱/导致严重的健康危险/还是一种状态
/联系/更紧密地与外表/而不是健康。