Question

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Though small, they can be very aggressive, so if you see one, don’t mistake it for a soft lovely teddy bear! The sun bear lives in trees, 1. you’ll need to keep your eyes on the tree if you want to see one and you can only see them in the rain forests in Southeast Asia.

They are essential to our ecosystem because they help spread seeds while also 2. (keep) disgusting termites (白蚁) under control, which means there is less destroying of our tropical trees which in turn 3. (mean) our atmosphere is clean enough for us to live 4. (healthy).

When they do come down from the trees, they also dig for invertebrates (无脊椎动物) in the soil, thus 5. (improve) the forest’s nutrient cycle by mixing the rich and poor soil. Unfortunately, their global population 6. (decline) 30% over the last few years, making them the second 7. (rare) bear species next to the Giant Panda.

Their tongues are up to 25 cm in 8. (long) and help them to satisfy their greedy appetite for honey, 9.sometimes makes them known as “honey bears”. You can tell the Sun Bear 10. other bear species from the horseshoe marks on their chest. No two markings are the same!

Answer

1.so

2.keeping

3.means

4.healthily

5.improving

6.has declined

7.rarest

8.length

9.which

10.from

【解析】

这是一篇说明文。主要介绍了太阳熊这一生物对生态系统的重要性，以及他们的生活习性和身体特征。

1.考查连词。句意：太阳熊生活在树上，所以如果你想看到它们，你需要把眼睛放在树上，而你只能在东南亚的雨林中看到它们。结合上下文语境可知表示因果关系，应用连词so。故填so。

2.考查非谓语动词。句意：它们对我们的生态系统至关重要，因为它们有助于传播种子，同时控制令人讨厌的白蚁，这意味着对我们热带树木的破坏更少，这反过来意味着我们的大气足够干净，让我们健康地生活。分析句子结构可知keep在句中做非谓语动词，与逻辑主语they构成主动关系，故用现在分词。故填keeping。

3.考查主谓一致。句意同上。本句为非限定性定语从句修饰上文which means there is less destroying of our tropical trees，描述客观事实用一般现在时，句子做主语，谓语动词用第三人称单数形式，故填means。

4.考查副词。句意同上。修饰动词live应用副词形式。故填healthily。

5.考查非谓语动词。句意：当它们从树上下来的时候，它们还会在土壤中挖掘无脊椎动物，从而通过混合肥沃和贫瘠的土壤来改善森林的营养循环。分析句子结构可知improve在句中做非谓语动词，与逻辑主语they构成主动关系，故用现在分词。故填improving。

6.考查动词时态。句意：不幸的是，它们的全球数量在过去几年里减少了30%，使它们成为仅次于大熊猫的第二大珍稀熊类。根据下文over the last few years可知应用现在完成时，主语为global population，谓语动词用单数形式。故填has declined。

7.考查形容词最高级。句意同上。固定结构“the ＋序数词＋形容词最高级”表示“第几最……”，结合句意可知表示“第二大珍稀”应用形容词最高级形式，故填rarest。

8.考查名词。句意：它们的舌头长达25厘米，以满足它们对蜂蜜的贪婪胃口，这有时使它们被称为“蜂蜜熊”。表示“长度”短语为in length，故填length。

9.考查定语从句关系词。句意同上。本句为非限定性定语从句修饰上文整个句子，从句中缺少主语，故用关系代词which。故填which。

10.考查介词。句意：你可以从它们胸前的马蹄形标记分辨出太阳熊和其他种类的熊。表示“分辨；区分”短语为tell from，故填from。