问题 综合

读“地震波的波速与地球内部圈层的划分”图,填空(每空1分,共10分)。

(1)指出图中A、B各代表什么波: A:           B:          

(2)A、B两种地震波大约在地下33千米处传播速度明显加快,从而发现了C          不连续面。

(3)在地下2900千米处,A波       ,B波波速        ,从而发现了D          不连续面。

(4)C面以上为           ,C面和D面之间为        ,D面以下为           ,F 的状态为              .

答案

(1)横波    纵波                   (2)莫霍面

(3)消失     陡降      古登堡面   (4) 地壳   地幔   地核 固态金属球

题目分析:(1)图示A波的传播速度较B波慢,故判断A表示横波,B表示纵波。(2)地下33KM为地壳和地幔的分界面,故判断为莫霍界面。(3)图示地下2900KM处,横波消失,纵波的速度也明显下降,判断为地幔和地核的分界面,为古登堡界面。(4)莫霍界面以上为地壳;莫霍界面到古登堡界面之间为地幔,F为内核,应处于高温高压条件下,物质状况据科学家推测为固态。

点评:本题难度低,基础性试题。学生只要能抓住图示随地球内部的深度的变化地震波传播速度的变化规律,结合地球内部三大圈层的划分和各层的基本特征等内容分析。

写作题

阅读下面的短文,然后按照要求写一篇150左右的英语短文。 

It was the end of my first day as a waitress in a busy New York restaurant. My cap had gone away, and my feet hurt. The loaded plates I carried seemed to be heavier and heavier. Tired and discouraged, I didn't seem able to do anything right. As I wrote out a check for a family with several children who had changed their ice-cream order a dozen times, I was ready to quit. Then the father smiled at me as he handed me my tip. “Well done”, he said, “you're looking after us really well.” Suddenly my tiredness disappeared. I smiled back, and later, when the manager asked me how I’d like my first day, I said, “Fine!” Those few words of praise had changed everything. Praise is like sunshine to the human spirit; no flower can grow without it. And yet, most of us are only too ready to apply to others the cold wind of criticism; we are unwilling to give our fellows the warm sunshine of praise. Why---when one word of praise can bring such benefit?

In fact, to give praise costs the giver nothing but a moment's thought and a moment's effort but will reward both the giver and the recipient(接受者) with a happy day. Let’s learn to give praise to people around us.

[写作内容]

1. 以约30个词概括短文的要点;

2. 然后以120个词就“The Power of Praise”为主题发表你的看法, 并包括如下要点:

1)  在你周围,人们对赞美的看法和做法;

2) 你的观点如何?你怎么做?举例说明赞美的力量。

[写作要求]

1. 可以使用自己的经历或听到的故事,可以参照阅读材料的内容, 但不得直接引用原文中的句子;

2. 标题已经给出。

[评分标准]

概括准确、语言规范、内容合适、篇章连贯。

名词解释