首页
登录
职称英语
Scientists have created a tomato that can grow on salty water. The plant is
Scientists have created a tomato that can grow on salty water. The plant is
游客
2023-09-25
63
管理
问题
Scientists have created a tomato that can grow on salty water. The plant is the first crop of its kind ever produced in the world.
Its significance can not be overestimated (高估). The new technology can help mankind solve the problem of feeding its ever-expanding population. It is estimated that by 2025 the world population will amount to more than 9 billion, an increase of 3 billion over 2000. Each day 240,000 more people are born, ready to be fed like the rest of us. Unfortunately, not all the land on Earth can be used to grow crops for humans. About 24.7 million acres of the problem is irrigation (灌溉). When farmers water their crops, salts in the water also enter the soil. Over time, salts such as sodium (钠) and calcium (钙) build up to such a point that they severely harm the growth of crops. Salts destroy most plants’ ability to draw up water through their roots.
But, the new variety of tomato produced by American and Canadian scientists can store salts in its leaves so that the fruit doesn’t taste salty. Researchers hope this technology will enable areas of poor-quality land to become productive (多产的). And they can feed some of the world’s growing population. [br] The world "significance" (Para. 2) means ______.
选项
A、importance
B、quality
C、price
D、quantity
答案
A
解析
推断题。短文第二段第一句是第二段的主旨句,也就是论点。下面的内容都是解释说明并论证第一句的。第二段整段都是在讲这项新技术的重要性。所以可以推断significance的意思应该是选项A。
转载请注明原文地址:https://tihaiku.com/zcyy/3044933.html
相关试题推荐
Manyscientistsaresoconvincedofthebenefitsofchallengingthebrainthatt
Scientiststhinkthedifferencebetweenanimalsandmenis______.[br]Thepass
Thisisa(health)______place--freshair,plentyofsunshineandcleanwater.h
Whydon’tbirdsgetlostontheirlongmigratoryflight?Scientistshavepuzz
Scientistscandeterminesomeone’sfavoritefoodfromtheirbodyshape.They
Thosetomatoeswentbadsoeasily,(cause)______agooddealoflossduringtrans
Scientiststhinklaser(be)______oneofthemostusefultoolstoday.tobe句意:科学
Whendidthescientistslearnagreatdealaboutsleepanddreams?In_________
Withthepopulationexplosion,scientistswillhaveto______newmethodsofinc
ThewateroftheGreatSaltLakeisseawater.A、saltierthanthatofB、assa
随机试题
HemustgiveUSmoretime,______weshallnotbeabletomakeagoodjobofit.A、
[originaltext]Penurywaswhatpeoplecalledamysteryman.Wehadknownhim
[originaltext]Whatreallyworkstomakesustainablechangesindietandlif
Whencountriesdevelopeconomically,peop
良好态度与品德常用的培养方法主要有哪些?
关于行政复议有关事项的处理,下列哪些说法是正确的?A:申请人因不可抗力不能参加行
下列各项表述中,不符合增值税现行规定的有( )。A.小规模纳税人(除其他个人外)
在社会平均利润率不变的的情况下,利率高低取决于()。 A.通货膨胀率
盾构接收施工,工序可分为①洞门凿除、②到达段掘进、③接收基座安装与固定、④洞门密
小儿唾液腺渐趋成熟,唾液分泌明显增加出现在A、1~2个月 B、2~3个月 C
最新回复
(
0
)