问题 多项选择题

对城市生态系统物质循环具有的特征叙述不正确有()。

A.城市生态系统所需物质对外界无依赖性

B.城市生态系统物质既有输入又有输出

C.生产性物质远远小于生活性物质

D.城市生态系统的物质流缺乏循环

E.物质循环在自然状态下进行的

答案

参考答案:A, C, E

阅读理解

When you are learning English, you find it not clever to put an English sentence, word for word, into your own language. Take the sentence "How do you do?" as an example. If you look up each word in the dictionary, one at a time, what is your translation (翻译)? It must be a wrong sentence in your own language.

Languages do not just have different sounds, they are different in many ways. It’s important to master(掌握) the rules(规则) for word order (顺序) in the study of English, too. If the speaker puts words in a wrong order, the listener can’t understand the speaker’s sentence easily.Sometimes when the order of words in an English sentence is changed, the meaning of the sentence changes. But sometimes the order is changed, the meaning of the sentence doesn’t change.

Let’s see the difference between the two sentences:"She only likes apples. " "Only she likes apples. "

When you are learning English, you must use it as the English speaker does.

小题1:From the passage we know that _______when we are learning English.

A.we shouldn’t put every word into our own language

B.we should look up (查阅) every word in the dictionary

C.we need to put every word into our own language

D.we must read word by word小题2: The writer thinks it is________in learning English.

A.difficult to understand different sounds

B.possible to remember the word order

C.important to master the rules in different ways

D.easy to master the rules for word order小题3:We can learn from the passage that_______.

A.the meaning of an English sentence always changes with the order of the words

B.the order of words can never change the meaning of an English sentence

C.sometimes different order of words has a different meaning

D.if the order of words is different, the meaning of the sentence must be different

单项选择题