题目内容

【题目】2004年5月7日中国教育报《风沙威逼北京城》报道:今年4月25日,古都北京风沙再起,这已是今春第8次沙尘暴天气了。据气象专家说,像今年沙尘暴来的这样早,次数频繁,危害大,是中国历史上从未有过的,风沙威逼北京城已成为不争的的事实。据此回答下列各题。

【1】从城市环境污染角度看,沙尘暴将使北京城市环境质量严重下降。沙尘暴的首要污染物是

A二氧化碳 B二氧化硫

C碳氢化合物 D悬浮颗粒

【2】从生态破坏角度看,与沙尘暴形成原因紧密相关的是

A西北地区水土流失面积日趋扩大 B西北地区土地荒漠化日趋严重

C西北地区土地盐渍化问题日趋严重 D西北地区野生动植物濒临灭绝

【3】沙尘暴作为一种天气现象,它的形成是由于

A冷锋过境 B暖锋过境

C气旋过境 D反气旋过境

【4】沙尘暴属于

A气象灾害 B海洋灾害

C地质灾害 D生物灾害

【5】浮尘天气期间,下列做法正确的是

打开窗户,让空气流通,以吹散尘土 沙尘天气人们要尽量减少出行

城市建筑工地也要注意提前做好防风降尘工作 每次都通过人工降雨的方式驱散浮尘

A①② B②③ C①④ D③④

【答案】

【1】D

【2】B

【3】A

【4】A

【5】B

【解析】

试题分析:

【1】沙尘暴的首要污染物是空气中的沙尘,即固体悬浮物,D项正确。

【2】影响我国的沙尘暴主要沙源地是我国西北的荒漠化地区。

【3】沙尘暴是冬季影响我国北方的冷锋过境而形成的灾害性天气。

【4】本自然灾害的分象灾害:是指因暴雨洪、干旱、台、寒潮、大、大、高等因素直接造成 的灾害。地灾害:地震、火山、滑坡和泥石流。海洋灾害是指源于海洋的自然灾害:海暴潮。沙象灾害。所以本题选择A选项

【5】沙尘天气要尽量减少出行 城市建筑工地也要注意提前做好防风降尘工作 ;选B项。

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相关题目

【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Every mom or dad knows how it’s difficult to cope with a baby who doesn’t want to sleep. 【1】 You can do some chores while your little one is sleeping. There are a few things that you may want to try when your baby won’t sleep.

1. Rocking

【2】 Almost every nursery contains a rocker for this reason. For instance, I rocked my daughter and I really loved each moment of it.

2. White noise

If your baby has trouble falling asleep, it can be a difficult time for the whole family. It may sound strange, but white noise can work wonders to calm your baby. 【3】 I recommend you to try sounds such as ocean waves, the wind rushing through the trees or the sound of rain. Soft music can also be calming to your child.

3. Sleeping pattern

【4】 It’s very important to have your child on a schedule and have a sleeping pattern. This way, your baby will sleep regularly and it will make your day and night easier to plan.

4. Pretend to asleep yourself

While it’s not very effective way to help your baby sleep, if you don’t know what else you can do, this way is worth trying. When you’re lying down with your little one, pretend to be asleep yourself and see if it works. 【5】

A. It can help your little one be more ready for a sleep.

B. It can help your baby grow healthier and brighter soon.

C. One of the best ways to help your span>baby sleep is rocking.

D. Your baby needs naps and you as a parent need them too.

E. When you play music loudly enough, your baby will sleep quickly.

F. When your house is quiet and everyone is quiet, your baby may fall asleep too.

G. One of the reasons you baby has trouble sleeping is because they don’t have a schedule.

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