Question

【题目】Read the passage and choose the best answer（根据短文内容，选择最恰当的答案）：

Dinosaurs were the dominant land animals for 160 million years, making them one of the most successful groups of animals ever. However, all the dinosaurs that were living 65 million years ago went extinct. About 70% of all animal life on the earth died out. Scientists call it a mass extinction（大灭绝）.

Having existed for 165 million years, why did dinosaurs die out? There are many different theories about why this happened. We will probably never know exactly what happened, which means that scientists will continue to disagree and come up with different dinosaur extinction theories. Here are two of them:

Ice Age Theory

Now and again, the earth cools into periods we call ice ages. As dinosaurs were thought to be cold blooded, it was hard for them to cope with such cold conditions.

Disease

It is possible that a disease spread through the dinosaur population causing their extinction.

Scientists have come up with some strange ideas but none of the theories really explains everything, so we will probably never be sure what happened.

【1】The underlined word “dominant” in the passage probably means _________.

A.biggestB.powerfulC.strangeD.special

【2】Why did the dinosaurs become extinct? ___________.

A.Dinosaurs could not suffer from cold weatherB.A disease spread through the dinosaur population

C.Other species became stronger than dinosaursD.We have not known about the truth yet

【3】Dinosaurs existed on the earth for _______ million years.

A.160B.165C.65D.115

Answer 1

【答案】

【1】B

【2】D

【3】B

【解析】

文章主要介绍了科学家们就“恐龙灭绝”这个理论做了各种的推测，但是没有一个理论是成立的，且在文中列举出其中的两个理论。

【1】词义猜测题。根据文中making them one of the most successful groups of animals ever.“使它们成为有史以来最成功的动物群之一”，可知，dominant指的是“占统治地位的，主导的”，故选B。

【2】细节理解题。根据文中Having existed for 165 million years, why did dinosaurs die out? There are many different theories about why this happened. We will probably never know exactly what happened, which means that scientists will continue to disagree and come up with different dinosaur extinction theories.恐龙已经存在1亿6500万年了，为什么恐龙灭绝了？关于为什么会发生这种情况，有很多不同的理论。我们可能永远也不知道到底发生了什么，这意味着科学家们将继续持不同意见，提出不同的恐龙灭绝理论。和文中Scientists have come up with some strange ideas but none of the theories really explains everything, so we will probably never be sure what happened.科学家们提出了一些奇怪的想法，但没有一种理论能真正解释这一切，所以我们可能永远无法确定到底发生了什么。可知，没有人知道恐龙为什么会灭绝，故选D。

【3】细节理解题。根据文中Having existed for 165 million years, why did dinosaurs die out?恐龙已经存在1亿6500万年了，为什么恐龙灭绝了？可知，已经生活了1亿6500万年，故选B。

细节理解类的阅读理解是属于直接解答性问题，是阅读理解题中最简单的一种，多数属中低难度的送分题。但由于中考所占的比例很大，应特别引起注意。比如第三小题Dinosaurs existed on the earth for _______ million years. A. 160 B. 165 C. 65 D. 115根据文中Having existed for 165 million years, why did dinosaurs die out?恐龙已经存在1亿6500万年了，为什么恐龙灭绝了？即可知道答案。