Plants produce oxygen, which is important for animals to breathe. This shows that plants play a(n) ___ role in the ecosystem. A. unimportant B. important C. harmful D. useless 相关知识点: 试题来源: 解析 B。本题考查植物在生态系统中的作用。植物产生氧气供动物呼吸,这表明植物在生态系统中...
Plants produce oxygen that we need to breathe. In this sentence, “that we need to breathe” is ___. A. attributive clause B. adverbial clause C. object complement D. appositive clause 相关知识点: 试题来源: 解析 A。解析:“that we need to breathe”是定语从句,修饰“oxygen”。反馈...
第三节 单句语法填空在空白处填入1个适当的单词或括号内单词的正确形式。1. Plants produce oxygen for humans to breathe (b
Plants ___ oxygen for us to breathe. A. produce B. produced C. are producing D. will produce 相关知识点: 试题来源: 解析 A。本题考查一般现在时。plants 是复数名词,且表示通常的状态,用一般现在时,produce 符合。B 一般过去时不符合现在的状态;C 现在进行时也不合适,不是正在进行的动作;D 将来...
44. The ___ (科学家) tells us that the green plants produce (产生) oxygen by light.相关知识点: 试题来源: 解析 scientist 该句需要填入表示“科学家”的名词,且要与谓语动词“tells”保持一致。由于“tells”是第三人称单数形式,因此填入的词也应为单数形式。因此,答案为“scientist”。反馈...
【题目】-Plants can produce oxygen for people.-How useful they are.A.makeB.pushC.appear 答案 【解析】A 结果二 题目 —Plants can produce oxygen for people.—How useful they are.A.makeB.pushC.appear 答案 A相关推荐 1【题目】-Plants can produce oxygen for people.-How useful they are.A....
三、单句语法填空(共10小题;每小题2分,满分20分)在空白处填入1个适当的单词或括号内单词的正确形式。1. Plants produce oxygen for humans to breathe (breath) and food to eat.2. Years of fighting had left the area in ruins.3. She suffered from a terrible headache and had to take a day ...
句子描述植物通过叶子呼吸,需要使用动词“breathe”。 43. 句子描述魔法故事是她喜欢的类型,需要使用形容词性物主代词“her”。 44. 句子描述花朵将在未来产生香味,需要使用动词“produce”的将来时态“will produce”。 45. 句子描述下班回家后的习惯,需要使用动词“relax”的现在时态。反馈 收藏 ...
5. Trees produce oxygen, which keeps humans, animals and plants ___.(live) 相关知识点: 试题来源: 解析 alive 该句需要填入一个形容词来描述氧气对人类、动物和植物的作用,即保持它们的“活着”状态。因此,答案为 "alive",表示“活着的”。反馈...
Plants are called producers because they ___. A. produce oxygen only B. produce food for themselves and other organisms C. produce carbon dioxide only D. produce water only 相关知识点: 试题来源: 解析 B。植物被称为生产者是因为它们为自己和其他生物生产食物。A选项只生产氧气不准确;C选项植物...