70．The underlined word “dissolve” is used to express the idea that organic matter and minerals from soil are 　　　　　．　

A．rushed away into the river　 B．cleaned and purified by water

C．destroyed and carried away by water

D．mixed with water and become part of it

基础写作

鼠标是计算机时代最佳的人机交互工具之一。它极大地方便了人们的计算机操作。但是，过分依赖鼠标的习惯也会带来一些不利影响。请你以鼠标为切入点，根据下表所提示的信息，用英语写一篇短文。

[写作内容]

鼠标的必要性	对多数人来说，操作计算机，上网冲浪……
鼠标的便捷性	点击、移动、插入、拷贝、删除……	编辑文本，搜索信息……
收发邮件，选购商品……
点播音乐，下载电影……
如果过分依赖鼠标……　 (请考生结合自身感受，列举两到三点)

[写作要求]

69．We can infer from the passage that the water table lies　　　 ．

A．between the topsoil layer and the subsoil layer

B．in the subsoil layer above bedrock

　 C．between the subsoil layer and bedrock

　 D．in the bedrock layer beneath the subsoil

68．According to the text, which of the following is NOT true?

　　 A．Soil forms from weathered rock on the earth surface．

B．The deeper layer of soil is darker in colour than the surface soil．

C．Air pollution is partially responsible for acid soil．

　　 D．Groundwater tends to carry away nutrients for plant growth．

67．The layer of soil that provides necessary nutrients for plant growth is called．

　　 A．1itter　　 B．topsoil　　 C．humus D．subsoil

66．An exchange student staying at QUT for five days has to travel between zones every day．What type of ticket would he probably buy?

　 A．Single．　　 B．Weekly．　　 C．Off-peak Daily． D．Ten-trip Saver．

D

Have you ever noticed the colour of the water in a river or stream after a heavy rainfall? What do you think caused this change in colour? It is soil that has been washed into the river from the riverbank or from the nearby fields．

Components of Soft

　　 Soil is made up of a number of layers(层)，each having its own distinctive colour and texture．The upper layer is known as the litter．It acts like a blanket, limiting temperature changes and reducing water loss．The topsoil layer is made up of small particles of rock mixed with rotten plant and animal matter called humus(腐殖质)，which is black and gives the topsoil its dark colour．This layer is usually rich in nutrients，oxygen，and water．Below the topsoil is the subsoil，a layer that contains more stones mixed with only small amounts of organic matter．This layer is lighter in colour because of the lack of humus．Beneath the soil lies a layer of bedrock．

　　 Soil forms from the bottom up．Over time bedrock is attacked by rain, wind，frost, and snow．It is gradually broken down into smaller particles in a process called weathering．Plants begin to grow，and rotten materials enrich the topsoil．Most of the soil in Eastern Canada, for example, was formed from weathered rock that was exposed when the ice disappeared l2,000 years ago．

Water Beneath the Soil

　　 Surface water collects and flows above the ground in lakes, ponds, and rivers．Once in the soil or rock，it is called groundwater．Gravity pulls groundwater through the soil in a process called percolation(渗透)．Eventually the water reaches a layer called the water table．Under this is bedrock through which water cannot percolate．

　　 As water percolates downward，it dissolves organic matter and minerals from the soil and carries them to deeper layers．This causes a serious problem because plants require these nutrients for growth.

Soil pH

　　 Soil can be acidic, neutral, or basic．The pH of the soil is determined by the nature of the rock from which it was formed．and by the nature of the plants that grow and rot in it．

　　 The acidity of rain and snow can lower the pH of the groundwater that enters the soil．By burning fossil fuels such as coal，oil and gasoline，humans have been contributing to higher levels of acidity in many soils．When fossil fuels are burned, gases are released into the air and then fall back to earth as acid rain．Acid soil increases the problem of carrying nutrients to lower soil levels．As nutrients are removed，soil is less fertile．Plants grow more slowly in acidic soil，and also become easily attacked by diseases．

65．We can learn from the passage that　　　　 ．

A．buses are scheduled as usual on weekends and public holidays

B．regular students at QUT need to buy adult tickets

C．pre-paid tickets can be bought from the Public Transport Information Centre

D．ten­-trip Savers can be used at off-peak time

64．The transport guide above is most likely provided by　　　　 ．

A．Public Transport Information Centre

B．the Brisbane City Council

C．Queensland University of Technology．

D．BCC Customer Service Centres

63．Which of the following sentences from the text BEST indicates that the teacher is very considerate?

A．In her calm，motherly voice she said，“By the end of winter，…”(Paragraph 2)

B．With the grace that only experience can bring，she struggled to…(Paragraph 4)

C．…．she still managed to look both helpful and interested．(Paragraph 4)

D．…，she managed to act as though I wasn’t an annoying little girl.(Paragraph 4)

C

Transport Guide

　The Brisbane City Council(BCC)is responsible for bus and ferry services within the city limits and suburbs．Most buses will either arrive at the city or an interchange where connecting buses can be caught．BCC buses operate from 5：30 am to 11：00 pm Monday to Thursday and 5：30 am to 12：00 am on Fridays .On weekends and public holidays buses operate less frequently. Prepaid bus tickets can be purchased from the QUT (Queensland University of Technology)bookshop，the campus newsagency, most other newsagencies and general stores，and any BCC Customer Service Centre．Short-term students at QUT cannot use their ID cards to gain a discount fare on BCC public transport．You will need to buy an adult ticket to travel．Bus fares are dependent on the number of zones you have to travel．There are several types of tickets：

Single：one way ticket to reach your destination，including transfers within 2 hours．

Daily: unlimited travel within the zones．

Off-peak Daily：discounted unlimited travel between 9：00 am and 3：30 pm and after 7：00 pm Monday to Friday, and all day on weekends and public holidays．

Weekly：unlimited travel within the zones for one week from the date of issue．

Monthly：unlimited travel within the zones for one calendar month from the date of issue．

Ten-trip Saver: 10 trips at any time within the zones on buses and ferries only．

　　 Transport routes, timetables and fare information are available from:

Public Transport Information Centre

69 Ann Street (corner of George St)

Brisbane City

　　 Phone l3 12 30(Transport Information Service)

62．It can be inferred that before the little girl finally went out to enjoy the first snow of winter，the teacher had to help her put on her boots　　　 ．

　　 A．once　　 B．twice　　 C．three times 　D．four times

61．What made it so hard for the teacher to help the little girl put her boots on?

A．The gloves in the toes of the boots．　　 B．The slowness of the teacher．

C．The wrong size of the boots．　　　　 D．The unwillingness of the girl．