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今年我国西南地区旱情严重，水资源的保护和合理利用已受到人们的普遍关注。请你来参与讨论下列有关问题： （1）政府组织了人工降雨活动。下列物质可用于人工降雨的是 （填序号） ①食盐 ②干冰 ③面粉 ④木炭粉 （2）有些村民取浑浊的河水作生活用水，将浑浊的河水用下图所示的简易净水器进行净化，其中活性炭的作用是 ，用此装置净化后得到的水属于 （填“纯净物”或“混合物”）。 （3）有些村打井取用地下水，检验某地下硬水还是软水，可用的物质是 ，测定地下水的酸碱度可用 （填序号）。 ①紫色石蕊试液 ②无色酚酞试液 ③pH试纸 （4）水可以造福人类，但水被污染后却给人类造成灾难。为了防止水的污染，下列各项： ①抑制水中所有动、植物的生长；②不任意排放工业废水；③禁止使用农药和化肥；④生活污水经过净化处理后再排放。其中可以采用的方法是 （填序号）。 A．①② 　B．②③ 　C．①④ D．②④ （5）我们应大力提倡节约用水，请你写出一种节水措施 。
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【单选题】以下汉字中,属于形声造字法造的字是
A.
颖
B.
聂
C.
美
D.
并
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【单选题】听力原文： More than a quarter of the world adult population are still unable to read and write. They are called illiterates. A worldwide campaign to change this situation has been launched by the United N...
A.
More than 1/3.
B.
More than 1/5.
C.
More than 1/4.
D.
A little Jess than 1/4.
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【多选题】《指南》中提出的关于学前儿童身体健康的教育建议包括几条?
A.
具有健康的体态
B.
具有良好的生活卫生习惯
C.
具有基本的生活自理能力
D.
具有良好的社会适应能力
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【简答题】Questions 15 to 18 are based on the following dialogue happened in a bookstore. Why didn't the man believe his eyes? [A] Because he didn't know the price. [B] Because he didn't see the price tag. [C] ...
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【单选题】More than a quarter of the energy in the United States goes to moving people and goods from one place to another.
A.
using
B.
used
C.
to use
D.
use
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【简答题】Most people in America live in small family groups. More than a quarter of homes in America have only got one person in them. Some of these are old people but some are people of twenty or thirty years...
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【单选题】(dialogue 3:１１－１５)Why did the woman come to complain to the manager?
A.
Because the faucet in the lavatory was leaking the whole night.
B.
Because the room was in very bad conditions when they moved in.
C.
Because she doubted if the room had been checked before they moved in.
D.
Because this was not the room she had reserved.
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【单选题】If you are more than a quarter of an hour late, you could lose your reservation for the computer.
A.
真
B.
假
C.
NOT GIVEN
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【简答题】Most people in Britain live in small family groups. More than a quarter of houses in Britain have only got one person in them. Some of these are old people but some are people of twenty to thir­ty who...
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【单选题】以下汉字中,属于形声造字法造的字是
A.
颖
B.
聂
C.
美
D.
并
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【单选题】听力原文： More than a quarter of the world adult population are still unable to read and write. They are called illiterates. A worldwide campaign to change this situation has been launched by the United N...
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【多选题】《指南》中提出的关于学前儿童身体健康的教育建议包括几条?
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具有健康的体态
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【简答题】Questions 15 to 18 are based on the following dialogue happened in a bookstore. Why didn't the man believe his eyes? [A] Because he didn't know the price. [B] Because he didn't see the price tag. [C] ...
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【单选题】More than a quarter of the energy in the United States goes to moving people and goods from one place to another.
A.
using
B.
used
C.
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【简答题】Most people in America live in small family groups. More than a quarter of homes in America have only got one person in them. Some of these are old people but some are people of twenty or thirty years...
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【单选题】(dialogue 3:１１－１５)Why did the woman come to complain to the manager?
A.
Because the faucet in the lavatory was leaking the whole night.
B.
Because the room was in very bad conditions when they moved in.
C.
Because she doubted if the room had been checked before they moved in.
D.
Because this was not the room she had reserved.
查看完整题目与答案
【单选题】If you are more than a quarter of an hour late, you could lose your reservation for the computer.
A.
真
B.
假
C.
NOT GIVEN
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【简答题】Most people in Britain live in small family groups. More than a quarter of houses in Britain have only got one person in them. Some of these are old people but some are people of twenty to thir­ty who...
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