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
小题1:C
小题2:B
小题3:A
小题4:A
小题5:C
小题6:B
小题7:B
小题8:A
小题9:C
小题10:A
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。