Ⅱ.语法填空
(2020·山东聊城市高三二模)Agricultural experts say crop diversity is important to feed the__1__ (increase) population of our planet.They say having a large variety of plants also__2__ (help) to protect against possible crop diseases and future crises.But many experts say the number has decreased sharply during the past century.
One of the world's __3__ (large) seed conservation projects has predicted further losses.The Millennium Seed Bank Partnership is warning that up to one hundred thousand plant species could __4__ (permanent) disappear.The rich collection of genes__5__ decide their qualities would disappear with them.
Many experts blame climate change and loss of habitat, normal growth area, for damaging plant life.They say human__6__ (activity) and poorly planned, overly heavy use of land also are responsible.Modern business farming is responsible__7__ loss of farmers' traditional crop varieties.The “Green Revolution” of the twentieth century changed agriculture.Some experts say the use of modern commercial farming methods saved millions of people from__8__ (starve)．Farmers planted, watered, and fertilized their crops with the help of machines.They treated their fields with chemicals__9__ (control) diseases and insects.Harvests grew larger and higher quality, __10__ another result was that some traditional crops were lost.Damage to the environment over the past century makes people believe that crop diversity also suffered.
语篇解读：本文是一篇说明文。农作物的多样性对养活地球上不断增长的人口很重要。但是有很多植物正在消失，原因是气候变化和(这些植物)栖息地的丧失。
1．increasing 考查形容词。句意：农作物的多样性对养活地球上不断增长的人口很重要。根据句意，这里要表达的是“增长的”。increase的形容词为increasing ，意为“增加的”符合句意，故填increasing。
2．helps 考查时态。分析句子成分可知help在宾语从句中做谓语，主语“having a large variety of plants”是单数，所以谓语动词要用单数。全文时态为一般现在时，所以这里也要用一般现在时，故填helps。
3．largest 考查形容词的最高级。句意：世界上最大的种子保护项目之一预测将会有更多的损失。根据句意，这里要用所给形容词的最高级，故填largest。
4．permanently 考查副词。修饰动词disappear，所以要用其副词形式，故填permanently。
5．that/which 考查定语从句。分析句子成分可知“__5__ decide their qualities”定语从句，先行词为genes，为物。空格处引导定语从句且在从句中做主语，先行词genes，为物，要用that/which来引导这个定语从句，故填that/which。
6．activities 考查名词单复数。activity为可数名词，本句中没有冠词，说明要用其复数形式，故填activities 。
7．for 考查介词。be responsible for为固定搭配，意为“对……负责”，所以这里要填介词for。
8．starvation 考查名词。句意：一些专家说现代商业农业方法的使用使数百万人免于饥饿。空格处为介词from的宾语，所以用其名词形式starvation。故填starvation。
9．to control 考查非谓语动词。句意：他们用化学药品来防治疾病和昆虫。根据句意，“(control) diseases and insects”是“treated their fields with chemicals”的目的，所以用不定式表目的，填to control。
10．but/while/yet 考查连词。句意：收成越来越多，质量也越来越好，另一个结果是一些传统作物消失了。根据句意，“Harvests grew larger and higher quality”与“was that some traditional crops were lost”之间是转折关系，一个是好处，一个是坏处，所以要用表示转折关系的连词连接前后两个句子，故填 but/while/yet。
(2020·山东聊城市高三二模)Agricultural experts say crop diversity is important to feed the__1__ (increase) population of our planet.They say having a large variety of plants also__2__ (help) to protect against possible crop diseases and future crises.But many experts say the number has decreased sharply during the past century.
One of the world's __3__ (large) seed conservation projects has predicted further losses.The Millennium Seed Bank Partnership is warning that up to one hundred thousand plant species could __4__ (permanent) disappear.The rich collection of genes__5__ decide their qualities would disappear with them.
Many experts blame climate change and loss of habitat, normal growth area, for damaging plant life.They say human__6__ (activity) and poorly planned, overly heavy use of land also are responsible.Modern business farming is responsible__7__ loss of farmers' traditional crop varieties.The “Green Revolution” of the twentieth century changed agriculture.Some experts say the use of modern commercial farming methods saved millions of people from__8__ (starve)．Farmers planted, watered, and fertilized their crops with the help of machines.They treated their fields with chemicals__9__ (control) diseases and insects.Harvests grew larger and higher quality, __10__ another result was that some traditional crops were lost.Damage to the environment over the past century makes people believe that crop diversity also suffered.
语篇解读：本文是一篇说明文。农作物的多样性对养活地球上不断增长的人口很重要。但是有很多植物正在消失，原因是气候变化和(这些植物)栖息地的丧失。
1．increasing 考查形容词。句意：农作物的多样性对养活地球上不断增长的人口很重要。根据句意，这里要表达的是“增长的”。increase的形容词为increasing ，意为“增加的”符合句意，故填increasing。
2．helps 考查时态。分析句子成分可知help在宾语从句中做谓语，主语“having a large variety of plants”是单数，所以谓语动词要用单数。全文时态为一般现在时，所以这里也要用一般现在时，故填helps。
3．largest 考查形容词的最高级。句意：世界上最大的种子保护项目之一预测将会有更多的损失。根据句意，这里要用所给形容词的最高级，故填largest。
4．permanently 考查副词。修饰动词disappear，所以要用其副词形式，故填permanently。
5．that/which 考查定语从句。分析句子成分可知“__5__ decide their qualities”定语从句，先行词为genes，为物。空格处引导定语从句且在从句中做主语，先行词genes，为物，要用that/which来引导这个定语从句，故填that/which。
6．activities 考查名词单复数。activity为可数名词，本句中没有冠词，说明要用其复数形式，故填activities 。
7．for 考查介词。be responsible for为固定搭配，意为“对……负责”，所以这里要填介词for。
8．starvation 考查名词。句意：一些专家说现代商业农业方法的使用使数百万人免于饥饿。空格处为介词from的宾语，所以用其名词形式starvation。故填starvation。
9．to control 考查非谓语动词。句意：他们用化学药品来防治疾病和昆虫。根据句意，“(control) diseases and insects”是“treated their fields with chemicals”的目的，所以用不定式表目的，填to control。
10．but/while/yet 考查连词。句意：收成越来越多，质量也越来越好，另一个结果是一些传统作物消失了。根据句意，“Harvests grew larger and higher quality”与“was that some traditional crops were lost”之间是转折关系，一个是好处，一个是坏处，所以要用表示转折关系的连词连接前后两个句子，故填 but/while/yet。
