1. Archaeological and geological excavations indicate which a primitive type of corn was used as food in North America at least 7，000 years ago.
答案：B
分析及考点：连接词误用。宾语从句连接用that，不能用which替代。
参考译文：考古学和地质学挖掘发现表明远古种类的谷物早在7千年前就被当作食物了。
2. The major component of the sedimentary rock called shale is clay， an earthy， fine-grained material consisting primary of a particular group of crystalline minerals.
答案：C
分析及考点：修饰动词用副词。Consist of 固定搭配，primary修饰consist，应改成primarily
参考译文：被称为页岩的沉积岩的主要成分是粘土，一种土质的，有细密纹理的材料，主要包含一组特殊的水晶矿物质。
3. Copper was the first metal used by humans and is second only to iron into its utility through the ages.
答案：C
分析及考点：介词误用。改成in its utility
参考译文：铜是人类首先使用的金属，也是很多年里使用性仅次于铁的金属。
4. The mineral chalcopyrite usually is found in compact masses or in mixtures with various other mineral as opaque， brass-yellow， tetragonal crystals.
答案：C
分析考点：名词单数误用。改成minerals
参考译文：黄铜矿通常以不透明的黄铜色的四角形结晶的方式在紧密物质或和其他各种矿物质混合体中被发现。
5. Because the study of chemistry encompasses the entire material universe， it is central to the understand of other sciences.
答案：D
分析及考点：词性误用。Understand原形是动词，这里应该用作名词形式understanding.
参考译文：因为化学研究包括了整个物质世界，所以它是理解其他科学的中心。
6. The coal industry is important to every industrial nations because most other industries are directly or indirectly dependent on it.
答案：A
分析及考点：同样表示每个，所有，every应该跟名词单数，而nations是复数，应该改成all
参考译文：煤矿工业对所有国家来说都是重要的，因为大多数其他工业都直接或间接的依赖它。
7. The brightly colored kingfisher that perches until it sights a fish， then dives into the water to catch its prey.
答案：B
分析及考点：先看主谓宾，then连接两个句子。所以that perches实际不成立定语从句，应该把that去掉。
参考译文：具有光亮颜色的翠鸟栖息在高处，直到它看到鱼，它就会扎进水里把猎物抓住。
8. Neptune circles the Sun once every 164.8 Earth years， and its day —— one rotation its axis —— is 15.8 hours.
答案：C rotation around its axis
分析及考点：C的错误比较明显，B(every)的这种用法应记住，很容易被迷惑。
参考译文：
9. Observable comets are occasionally attracted toward the inner Solar System by the fields gravitational of nearby stars and giant molecular clouds.
答案：C
分析及考点：次序颠倒。应改为gravitational fields，重力场。
参考译文：可以观测的的彗星偶尔会受到附近星星和巨大的星云的重力场作用而吸引到太阳系内部来。
10. A single bacterium has the potential to produce 16 million copies of themselves in a day.
答案：D
分析及考点：代词指代问题。A single bacterium的代词要用itself
参考译文：单个细菌有能力在一天内生产16百万个它自身的复制品。
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