We know that trees are useful in our everyday life. They give us 1things, such as wood, ox

We know that trees are useful in our everyday life. They give us 1 things, such as wood, oxygen, rubber（橡胶）, medicines 2 many other things. They can also tell us a lot about our climate. The following are the reasons. If you cut 348 a tree, you can see that it has many rings. Most trees grow one new ring 4 year. Because of this, we know how old a tree is. A tree over a hundred 5 means that it has more than a hundred 6 . When the climate is dry or very cold, the trees do not grow very much and their rings 7 usually thin. When it is wet and warm, the rings
8 thicker. If the rings are suddenly very thin or suddenly very thick, it means that the 9 changed suddenly. If we look at the rings on the tree, we can learn about the climate in the past years. We can see
10 changing today.
【小题1】A．much B．lot C．many
【小题2】A．so B．and C．while
【小题3】A．down B．cross C．into
【小题4】A．every B．many C．some
【小题5】A．year old B．old C．years old
【小题6】A．plants B．rings C．leaves
【小题7】．A．is B．are C．were
【小题8】A．are much B．are more C．is much
【小题9】A．day B．year C．climate
【小题10】A．how our climate is B．how is our climate C．how to our climate C

(答案→)C 解析：【小题1】根据后文things，只有many 修饰，而much+不可数名词，lot不可修饰名词，故选C【小题2】 根据前后句的关系为并列关系，故选B【小题3】cut···down 是将····砍倒的意思，故选A。【小题4】根据上文的内容和生活常识内容，树一年才长一个年轮，故选A【小题5】.根据上文内容，hundred后接名词可数名词复数形式，表示岁数为years old。故选C【小题6】.根据上文的内容，可知树超过一百多年，故有一百多个年轮，故选B【小题7】.当主语为复数形式时，be动词选择are，即选答案B【小题8】.much可以修饰形容词的比较级，根据主语为the rings，故选be动词为are，故选A【小题9】.根据后文内容If we look at the rings on the tree, we can learn about the climate in the past years.，可知答案为C，表示年轮的变化是随着气候的变化而变化的，故选C【小题10】.本题考查的是特殊疑问句时，要用陈述句语序。

就是这个解释