问题 填空题

为合理利用水域资源,某调查小组对一个开放性水库生态系统进行了初步调查,部分数据如下表:

(1)浮游藻类属于该生态系统成分中的__________,它处于生态系统营养结构中的___________。

(2)浮游藻类数量少,能从一个方面反映水质状况好。调整数据分析表明:该水体具有一定的__________能力。

(3)浮游藻类所需的矿质营养可来自细菌、真菌等生物的__________,生活在水库淤泥中的细菌代谢类型主要为__________。

(4)该水库对游人开放一段时间后,检测发现水体已被氯、磷污染。为确定污染源是否来自游人,应检测_________处浮游藻类的种类和数量。

答案

(1)生产者      第一营养级

(2)自动调节(或自净化)

(3)分解作用      异养厌氧型

(4)入水口

选择题
阅读理解
The following are introductions to some programs that BBC I London will show on TV.
12:25 a.m. Tuesday
The Real Swiss Robinson Family
Laura worried that her children have had their life too easy due to her husband’s career in big business, so she decides to take her teenagers to the Cook Islands to experience the simple life.They face storms and a lack of food, but Laura is happy as their local guide shows them the island’s wealth of rare fruits and foods.
11:00 a.m. Wednesday
Orangutan Diary
A team have come across an armed man who is holding two baby apes who were captures. One of them, David, is sent to a medical emergency in the forest.Later a center director, Nielsen, finds a suitable place to set free more rescued animals.
7:50 p.m. Thursday
Lost Buildings of Britain
Simon Thurley visits the ruins of Glastonbruy Abbey(修道院),which , before its destruction by Henry VIII, was famous for some of the most amazing stained-glass of its age.It also had a great deal of financial power, acting as the center of an influential business empire.Eventually, it was the king’s envy of the abbey’s wealth that changed the abbey’s fate.
10:35 p.m. Thursday
Nigella Express
Nigella presents ideas for impromptu(即兴的)cooking, from new recipes and suggestions for taking advantage of the food you have to make quick, simple and impressive meals.
小题1:Why is Laura worried?
A.Life on the Cook Islands is too simple.
B.Her husband faces difficulties in his business.
C.Storms are approaching her hometown.
D.Her children may not know how to cherish life.
小题2:Jim enjoys TV programmes of people or organizations that take care of animals. He should probably watch TV at      .
A.10:35 p.m. on ThursdayB.7:50 p.m. on Thursday
C.11.00 a.m. on WednesdayD.12:25 a.m. on Tuesday
小题3:We can learn from the text that       .
A.David is a farmer
B.Henry VIII set up a business empire in the Abbey
C.Nielsen is an animal-lover
D.Glastonbury Abbey is famous today for its stained-glass