首页
登录
职称英语
In Australia, in years with below-average rainfall, less water goes into rivers
In Australia, in years with below-average rainfall, less water goes into rivers
游客
2024-01-12
20
管理
问题
In Australia, in years with below-average rainfall, less water goes into rivers and more water is extracted from rivers for drinking and irrigation. Consequently, in such years, water levels drop considerably and the rivers flow more slowly. Because algae grow better the more slowly the water in which they are growing moves, such years are generally beneficial to populations of algae. But, by contrast, populations of algae drop in periods of extreme drought.
Which of the following, if true, does most to explain the contrast?
选项
A、Algae grow better in ponds and lakes than in rivers.
B、The more slowly water moves, the more conducive its temperature is to the growth of algae.
C、Algae cannot survive in the absence of water.
D、Algae must be filtered out of water before it can be used for drinking.
E、The larger the population of algae in a body of water, the less sunlight reaches below the surface of the water.
答案
C
解析
Argument Construction
Situation The quantity of water in Australian rivers greatly diminishes in years of below-average rainfall, When river levels become very low, the rivers flow more slowly. The low flow favors rapid algae growth. However, in periods of extreme drought, algae populations drop.
Reasoning What information would most help to explain the two contrasting trends in algae growth? The. information given indicates that algae proliferate when rivers flow slowly. When the water levels become extremely low, algae populations decrease. In periods of extreme drought, presumably some rivers retain little or no water.
A This has no obvious relevance to explaining the contrast in the algae growth trends.
B Nothing in the given information is explicit about the effects of water temperature and how that changes in rivers with changes in rainfall rates.
C Correct. This information could help explain the decrease in algae populations during periods of extreme drought. It seems quite probable that during such periods, at least parts of some riverbeds would dry out.
D This information does not help explain the contrasting trends in algae growth. Algae filtered out of river water to be used for drinking might not be returned to rivers, and this conceivably could affect algae populations. But it seems likely, based on the given information, that this would occur mainly during low-rainfall non-drought periods, when proliferation of algae has increased, so the impact on algae populations would probably be minimal.
E This information is clearly irrelevant to the contrast that needs to be explained.
The correct answer is C.
转载请注明原文地址:https://tihaiku.com/zcyy/3357404.html
相关试题推荐
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洼).Thee
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洼).Thee
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洼).Thee
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洼).Thee
Morethan30,000driversandfrontseatpassengersarekilledorseriously
Morethan30,000driversandfrontseatpassengersarekilledorseriously
Morethan30,000driversandfrontseatpassengersarekilledorseriously
Theheavystormyesterdaysettherecordfortheheaviestrainfall______inasin
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洞).Theei
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洞).Theei
随机试题
AccordingtoUSscientists,a"universal"fluvaccinewill______.[originaltext
从内容看,()地籍是产权地籍的子集。A.多用途 B.功能性 C.单一化
患者,男,19岁,面下1/3明显前突,∠SNA81°,∠SNB87°。牙科模型显
女婴,10天龄,因少吃1天,皮肤黄染伴发热6小时入院。查体:脐轮红,有脓性分泌物
慢性心脏病患者心力衰竭的最常见诱因是A.电解质紊乱 B.心律失常 C.妊娠
根据《核子水分一密度仪现场测试规程》SL275-2014,仪器工作时,应在仪器放
现行政府工程质量监督,一般只限于()的质量监督。A:筹资阶段 B:投资阶段
患者男性,65岁。右舌缘疼痛不适4个月。体检见右舌缘中部有一溃疡,4cm×3cm
认为利息的本质是资本自身生产力的产物,这种观点属于()。A.利息报酬论
某公司从银行借款1000万元,年利息80万元,筹资费费率为30%,企业所得税率2
最新回复
(
0
)