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【单选题】
听力原文:A: About big international issues: what do you see as the most important environmental issues of the moment? B: It’s quite difficult to make a kind of hierarchy of worry here, because so many issues are there, and so … and they’re all very very important. But I think it has to be said that as far as we we’re concerned, as a campaigning organization, it really is the rain forest that we are concentrating on most. If we don’t take action on that issue within the next five years, then environmental pressure groups won’t have anything to do in ten years’ time, because there won’t be any rain forests, really, for them to campaign about. So this is a critical period for the rain forests, the next five years, and there is enough flexibility in the system to allow us to hope that we’re going to be able to make some changes during that time. So that’s why we’ve made it our priority. A: What’s so important about the rain forests, then? Er, what’s, what’s the difference between having them or not having them? Isn’t it just, you know, basically either there’re a lot of trees there or there aren’t a lot of trees there? B: Uhh…well that’s what some people would like to think. Um, there, it’s important in many different ways, important firstly for the countries themselves, in terms of the fact that millions of people depend on the rain forests for their livelihood, and for their … the quality of their environment, through the protection of watersheds, and so on. Secondly, they’re important because of the biological richness of the rain forests. Um, a genetic chest … treasure chest is how they’ve been described. Um, more than 60% of the world’s species is to be found in the rain forests. Write that off, and you write off that genetic storehouse. Lastly, they’re important at international level because of the impact on climate patterns that one would find if the rain forests were destroyed. So, whether you’re looking closely at the tribal people who depend on them, the countries which depend on them, the international community which depends on them, indeed the, the, you know, the creatures themselves, um, it’s actually the most critical issue that we face. And our prime job is of course to try and get people to understand how it is, even in countries where there are no rain forests, that they still have a connection with that rain forest. You will hear a recording about environmental issues. Mark one letter(A, B or C)for the correct answer. After you have listened once, replay the recording. According to the speaker, ______ is the most important environmental issues of the moment.
A.
air pollution
B.
water pollution
C.
rain forests
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参考答案:
举一反三
【单选题】按照网络的覆盖范围,计算机网络可分为
A.
交换网和广播网
B.
服务器和客户机
C.
通信子网和资源子网
D.
局域网、城域网和广域网
【多选题】下列关于婴幼儿腹泻的护理方法说法正确的有
A.
按医嘱服药,早治,治彻底
B.
注意腹部保暖。
C.
排便后用温水洗净臀部。
D.
吃有营养好消化的食物。
【单选题】按照计算机网络的覆盖范围,可将计算机网络分为( )。
A.
公用网与专用网
B.
局域网与广域网
C.
大网与小网
D.
星网与树网
【简答题】HTML语言中的〈TITLE〉...〈/TITLE〉是设置文档标题标记。该标题将在浏览器( )显示
【单选题】变性蛋白质特征表述有误的是
A.
溶解度降低
B.
粘度增加
C.
生物活性未丧失
D.
易为蛋白酶所水解
E.
分子结构松散
【单选题】下列有关植物克隆的叙述中错误的是()
A.
玉米和水稻等作物的一些品种或品系的培养细胞所诱导出的再生植株,在多次继代培养后,会丧失全能性的表达能力
B.
培养基中加入不同浓度的氯化钠或病原体的毒蛋白,可诱发和筛选抗盐或抗病突变体
C.
胚性细胞具有细胞质丰富、液泡小而细胞核大的特征
D.
植物组织培养过程中器官发生和形态建成主要通过调节植物生长调节剂种类来实现的
【单选题】在HTML语言中,______可用来为图像定义一串预备的可替换的文本。
A.
Alt
B.
Replace
C.
Text
D.
Title
【多选题】根据计算机网络的覆盖范围划分,计算机网络包括( )。
A.
公共网
B.
广域网
C.
城域网
D.
局域网
【单选题】正确护理腹泻婴幼儿的方法是
A.
继续辅食喂养
B.
禁食8-12小时
C.
继 续母乳喂养
D.
严禁牛奶喂养
【简答题】按照计算机网络的覆盖范围分类,计算机网络有广域网、局域网和城域网,覆盖范围在几十到几千公里的网络称为()。
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