首页
登录
职称英语
Many trees and shrubs change color in fall. Three factors influence fall’s c
Many trees and shrubs change color in fall. Three factors influence fall’s c
游客
2023-07-27
66
管理
问题
Many trees and shrubs change color in fall. Three factors influence fall’s colorful farewell-leaf pigments (色素), length of night, and weather. The timing of the color change is mainly【S1】______by the increasing length of night. None of the other【S2】______influences, such as temperature, rainfall, food supply, are as unchanging as the【S3】______increasing length of night during fall. As days grow shorter, and nights grow longer and cooler, biochemical processes in leaves begin to【S4】______the landscape with an explosion of colors. And nature puts on one of its most wonderful displays of beauty.
The timing of the color change varies by【S5】______. Some species in southern forests can become vividly colorful in late summer while all other species are still vigorously green. Oaks put on their colors long after other species have already【S6】______their leaves. These differences in timing among species seem to be【S7】______inherited, for a particular species, whether on a high mountain, or in warmer lowlands, will change color at the same time.
However, some species are【S8】______. Pines, for example, are green all the year round because they have toughened up. They have developed over the years a needle-like leaf, which is【S9】______with a heavy wax (蜡状的) coating. And the liquid inside their cells contains cold-resistant elements. So the leaves of evergreen can safely withstand all but the most【S10】______winter conditions, such as those in the Arctic.
A) severe E) species I) shed M) covered
B) paint F) regulated J) steadily N) attractive
C) genetically G) enthusiastic K) evergreens O) faded
D) present H) environmental L) present [br] 【S3】
选项
答案
J
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2873750.html
相关试题推荐
[originaltext]Beingbilingualproduceschangesintheanatomyofthebrain,
[originaltext]Beingbilingualproduceschangesintheanatomyofthebrain,
[originaltext]M:Excuseme,doyouhavechangeforaten-dollarnote?Ineedtop
[originaltext]M:Excuseme,doyouhavechangeforaten-dollarnote?Ineedtop
[originaltext]M:Excuseme,doyouhavechangeforaten-dollarnote?Ineedtop
[originaltext]M:Excuseme,doyouhavechangeforaten-dollarnote?Ineedtop
[originaltext]M:Excuseme,doyouhavechangeforaten-dollarnote?Ineedtop
[originaltext]W:Everyoneseemstobetalkingaboutclimatechangethesedays!
Socialchangeismorelikelytooccurinsocietieswherethereisamixture
Socialchangeismorelikelytooccurinsocietieswherethereisamixture
随机试题
(1)There’sthisgreatrecurringSaturdayNightLiveskitfromseveralyears
"Wanted"postersaren’tseenmuchthesedaysoutsideofWesternfilms.ButC
FindingYourExcellence:BecomingWhoYouAre1.Be【T1】【T1】______Giveefforta
管理的系统方法是八项质量管理原则之一,管理的系统方法可包括()环节。A.系统
个体对刺激的基本反映和体验形式是A.感觉 B.知觉 C.记忆 D.思维
下列()是人际交流中的反馈形式。A.书面反馈 B.语言反馈 C.图片反馈
甲股份有限公司的公司章程规定董事会成员为9人,但截至到2015年4月25日时,该
人生价值内在地包含了人生的自我价值和社会价值两个方面,因此,人生价值实现的条件必
对于工程质量的监督管理,我国实行()统一监督管理。 A.国务院B.国家发改
明挖地铁车站结构由()组合而成。A、底板 B、顶板和楼板 C、竖井 D、
最新回复
(
0
)