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READING PASSAGE 1You should spend about 20 minutes on Questions 1-13 which are based on Re

READING PASSAGE 1

You should spend about 20 minutes on Questions 1-13 which are based on Reading Passage 1 below.

A Remarkable Beetle

Some of the most remarkable beetles are the dung beetles, which spend almost their whole lives eating and breeding in dung1.

More than 4,000 species of these remarkable creatures have evolved and adapted to the world's different climates and the dung of its many animals. Australia's native dung beetles are scrub and woodland dwellers, specialising in coarse marsupial droppings and avoiding the soft cattle dung in which bush flies and buffalo flies breed.

In the early 1960s George Bornemissza, then a scientist at the Australian Government's premier research organisation, the Commonwealth Scientific and Industrial Research Organisation (CSIRO), suggested that dung beetles should be introduced to Australia to control dung-breeding flies. Between 1968 and 1982, the CSIRO imported insects from about 50 different species of dung beetle, from Asia, Europe and Africa, aiming to match them to different climatic zones in Australia. Of the 26 species that are known to have become successfully integrated into the local environment, only one, an African species released in northern Australia, has reached its natural boundary.

Introducing dung beetles into a pasture is a simple process: approximately 1,500 beetles are released, a handful at a time, into fresh cow pats2 in the cow pasture. The beetles immediately disappear beneath the pats digging and tunnelling and, if they successfully adapt to their new environment, soon become a permanent, self- sustaining part of the local ecology. In time they multiply and within three or four years the benefits to the pasture are obvious.

Dung beetles work from the inside of the pat so they are sheltered from predators such as birds and foxes. Most species burrow into the soil and bury dung in tunnels directly underneath the pats, which are hollowed out from within. Some large species originating from France excavate tunnels to a depth of approximately 30 cm below the dung pat. These beetles make sausage-shaped brood chambers along the tunnels. The shallowest tunnels belong to a much smaller Spanish species that buries dung in chambers that hang like fruit from the branches of a pear tree. South African beetles dig narrow tunnels of approximately 20 cm below the surface of the pat. Some surface-dwelling beetles, including a South African species, cut perfectly- shaped balls from the pat, which are rolled away and attached to the bases of plants.

For maximum dung burial in spring, summer and autumn, farmers require a variety of species with overlapping periods of activity. In the cooler environments of the state of Victoria, the large French species (2.5 cms long) is matched with smaller (half this size), temperate-climate Spanish species. The former are slow to recover from the winter cold and produce only one or two generations of offspring from late spring until autumn. The latter, which multiply rapidly in early spring, produce two to five generations annually. The South African ball-rolling species, being a sub- tropical beetle, prefers the climate of northern and coastal New South Wales where it commonly works with the South African turning species. In warmer climates, many species are active for longer periods of the year.

Dung beetles were initially introduced in the late 1960s with a view to controlling buffalo flies by removing the dung within a day or two and so preventing flies from breeding. However, other benefits have become evident. Once the beetle larvae have finished pupation, the residue is a first-rate source of fertiliser. The tunnels abandoned by the beetles provide excellent aeration and water channels for root systems. In addition, when the new generation of beetles has left the nest the abandoned burrows are an attractive habitat for soil-enriching earthworms. The digested dung in these bur

A.YES

B.NO

C.NOT GIVEN

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第1题

要在窗体上显示和修改数据表中的数据,应该首先设置()。

A.窗体的“记录源”属性

B.窗体的“标题”属性

C.窗体中文本框的“控件来源”属性

D.窗体中文本框的“名称”属性

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第2题

如果希望在窗体上显示窗体的标题,可在窗体页眉处添加一个______控件。
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第3题

下列控件中,用来显示窗体或其他控件的说明文字,而与字段没有关系的是()。 A.命令按钮B

下列控件中,用来显示窗体或其他控件的说明文字,而与字段没有关系的是()。

A.命令按钮

B.标签

C.文本框

D.复选框

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第4题

在窗体上设置一个命令按钮cmd1和一个标签lab1,两个控件的Visible属性值均为False,按钮的标题是“显示”。运行程序后,单击窗体时显示出命令按钮,再单击按钮时则显示标签,并在标签上显示“您已下达显示命令”。保存工程和窗体,窗体名为:昵称-2-1.frm,工程名为:昵称-2-1.vbp。将工程文件和窗体文件压缩成:昵称-2-1.rar,以附件形式提交。
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第5题

用于显示记录的绑定到字段的一组控件,应该将其放置在窗体的"主体"节中。()
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第6题

下列控件中,用来显示窗体或其他控件的说明文字,而与字段没有关系的下列选项中的()。A.命令按钮B.

下列控件中,用来显示窗体或其他控件的说明文字,而与字段没有关系的下列选项中的()。

A.命令按钮

B.标签

C.文本框

D.复选框

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第7题

窗体上的3个命令按钮构成名称为Command1的控件数组,如图所示。运行程序,单击“命令按钮2”,则如下叙述中正确的是()

A.PrintCommand1(2).Caption语句有错

B.在窗体上显示“命令按钮2”

C.在窗体上显示“命令按钮3”

D.在窗体上显示“计算机等级考试”

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第8题

窗体的5个组成部分中,用于显示窗体的使用说明、命令按纽或接受输入的未绑定控件,显示在窗体视图中窗体的底部和打印页的尾部的是().

A.窗体页眉

B.窗体页脚

C.页面页眉

D.页面页脚

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