题目内容
8．____nice day it is!（ ）| A． | What | B． | What a | C． | How | D． | How a |
分析 多么好的一天啊！
解答 答案：B．考查感叹句．句意"多么好的一天啊！"．感叹句可以是how+形容词+主语+谓语．或what a/an+形容词+名词+主语+谓语．这里的day是名词．主语it，谓语is．因此不用how，C，D不正确．day可数名词，nice是以辅音音素/n/开头，用a修饰．A不正确．答案是B．
点评 感叹句可以用how或what引导，两者有一定区别，要掌握该知识点，然后结合语境选择正确形式，完成试题．
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3．Did you make____again？（ ）
| A． | mistake | B． | a mistakes | C． | mistaken | D． | mistakes |
20．You probably don‘t think about soil often，but the following report may help you learn about science of soil．
What is soil made of？
Soil is made of sediments （沉积物） and humus（腐殖质）．Sediment is small pieces of rock broken down over time by rain，ice，and wind．Sediment is often found in water．Humus comes from decayed（腐烂的） plants and animals．It helps give plants a lot of the food they need to grow．
How does soil form？
Over centuries，rock breaks down into very small pieces．
The rock pieces mix with humus．
The humus gets thicker and thicker over time．Soil is formed（形成）l
How are soils different？
Soils can be different colors and have different textures（质感）．Texture is how the surface of an object feels．Color and texture are two features（特征） of soil．
Plants and soil
Plants do not grow well in some soils．Sandy soi1 is too dry．It does not hold water．Soil with too much clay is too thick．Most plants grow well in dark，rich garden soil that has different sediments and a lot of humus in it．
What is soil made of？
Soil is made of sediments （沉积物） and humus（腐殖质）．Sediment is small pieces of rock broken down over time by rain，ice，and wind．Sediment is often found in water．Humus comes from decayed（腐烂的） plants and animals．It helps give plants a lot of the food they need to grow．
How does soil form？
Over centuries，rock breaks down into very small pieces．
The rock pieces mix with humus．
The humus gets thicker and thicker over time．Soil is formed（形成）l
How are soils different？
Soils can be different colors and have different textures（质感）．Texture is how the surface of an object feels．Color and texture are two features（特征） of soil．
Plants and soil
Plants do not grow well in some soils．Sandy soi1 is too dry．It does not hold water．Soil with too much clay is too thick．Most plants grow well in dark，rich garden soil that has different sediments and a lot of humus in it．
The title （标题）：（81）Science of soil | |
The things in soil | Sediment is often found in water． Humus （82）comes from decayed plants and animals． |
The steps of forming | Rock breaks down into very small pieces． The rock pieces mix with humus． The humus gets （83）thicker and thicker． |
（84）The differences between soils | Soils can be different colors and have different textures． |
The relationship between plants and soil | （85）Dark，rich garden soil is good for plants to grow in． |
At East China University of Science and Technology，students will get a coupon （优惠券） if they eat up their food．Students can collect coupons and exchange them for small gifts，such as books，magazines，mobile phone covers and