Animals are ___ for the balance of nature. A. useful B. useless C. harmful D. bad 相关知识点: 试题来源: 解析 A。“useful”表示有用的,动物对于自然的平衡是有用的。“useless”是无用的,“harmful”是有害的,“bad”是坏的,都不符合动物在自然平衡中的作用。反馈...
Many people are working hard to save ___ animals. A. harmful B. endangered C. useful D. dangerous 相关知识点: 试题来源: 解析 B。“endangered”是濒危的,很多人努力拯救濒危动物。“harmful”是有害的,“useful”是有用的,“dangerous”是危险的,这三个选项不是人们努力拯救的对象。反馈...
Plan: To review the useful andharmful effects of plant toxins.Prologue: Poisonous chemicals found in plants are normal biochemicals.They have been developed as an evolutionary response for self-protection.Therefore, plants are deliberately poisonous and their toxicity to humans andother animals is an ...
()1. Plants areA.usefu]B.harmfulC. beautiful()2.Animals can get food fromA.airB.plantsC.people()3. Life needsto go on.A. animalsB.plantsC.trees()4.What can plants do?A. They can make the air clean and stop the wind from blowing away sand and earth.B. They can keep the ...
We should plant trees each year and look after them carefully. 相关知识点: 试题来源: 解析 1. main 2. oxygen 3. fight t 4. harmful 5. example 1.下面是一些主要的好处。 m开头的词, 形容benefits, 我 们联想到main,主要的。 2.他们也能提供给我们呼吸用的氧气。 氧气是oxygen。 根据 后面...
There are animals, which are useful to us in more than one way. Select an appropriate code to match the animals to untiliy. View Solution Give any two ways in which biodegradable substances would affect the environment View Solution Exams ...
aStrengths refers to attributes of an organization that can help achieve its objectives; weaknesses indicate those attributes that are harmful to fulfilling its goals; opportunities display those positive external conditions that facilitate organization’s business; threats show those negative external condit...
1牛津英语7b第一课的,关于火的,课文挺长的,翻译,fire can be very useful,but it can also be very harmful .be careful when you start a fire.millions of years ago,early men used a stick ,a large piece of wood and dry leaves to make a fire.early men found fire very useful.at firstm ...
Trees can us fruit and are useful and important in our daily lives.B A. protect; with B. provide; with C. provide; for D. provide; of2. -How terrible the pollution is here!-Yes. It is harmful both humans and animals.B A. for B.to C. with D. of3. We have only one earth....
Free-ranging house cats in urban and rural areas in the north: useful rodent killers or harmful bird predators?喜欢 0 阅读量: 35 作者:Talvitie,Kati,Vuorisalo,Timo,Kauhala,Kaarina 摘要: The prey of 66 free-ranging urban and rural house ...