题目：
Do you like dogs? Do you know the following things about dogs?
The first pet dog
Dogs are meat-eating animals. They belonged to the family of wolves (狼) a long time ago. About 15,000 years ago, people started keeping wolves for hunting (狩猎). Over the time, the wolves began to look like dogs and they became people’s pets.
What a dog looks like
Dogs come in different sizes, colors and shapes, but they’re the same in some ways. All kinds of dogs have a set of forty-two strong teeth for eating. They have sharp claws (利爪) at the end of their feet for digging up soil (挖土) and holding onto the ground when they walk. They have very good eyesight. They also have high ability (能力) to hear and smell.
How a dog grows
A mother dog gives birth to one to twelve babies at a time. New-born baby dogs cannot see or hear until they are two weeks old. The mother dog gives the baby dogs milk. When they are four weeks old, they start eating soft food. When they’re eight weeks, the baby dogs have very strong legs and they can go for long walks.
How to read a dog’s feelings
Dogs act differently when they have different feelings. When a dog is angry, it opens its mouth and shows its teeth. When a dog is frightened, it lowers its ears and holds its tail (尾巴) between its legs. A happy dog always wags (摇摆) its tail.
根据短文内容，选择最佳答案。（10分）
小题1:People have started keeping dogs as pets since .
A．there were humans
B．15,000 years ago
C．there were wolves
D．the wolves looked like dogs小题2:What can the sharp claws of dogs be used for according to the passage?
A．Climbing a tree.
B．Looking for food.
C．Digging up soil.
D．Fighting against other animals.小题3:When does a dog start to eat soft food?
A．When it’s 2 weeks old.
B．When it’s one month old.
C．When it’s 2 months old.
D．When it’s 8 months old.小题4:What does a dog do when it is frightened?
A．It opens its mouth.
B．It shows its teeth.
C．It wags its tail.
D．It holds its tail between its legs.小题5:What does the passage mainly tell us?
A．Some facts about dogs.
B．The history of dogs.
C．Something interesting about dogs.
D．Dogs are human beings’ friends.
答案：
小题1:B
小题2:C
小题3:B
小题4:D
小题5:C
题目分析：这篇文章主要讲述了狗的一些有趣事情，包括狗是如何成为人类的宠物的；狗的长相，狗为什么有锋利的爪子；狗的出生和成长；狗在不同的心理时的不同反应。
小题1: 细节理解题。根据文中描述About 15,000 years ago, people started keeping wolves for hunting (狩猎). Over the time, the wolves began to look like dogs and they became people’s pets.大约15000年前，人们开始养狼狩猎，在那时，狼就开始像狗一样成为人的宠物，故选B。
小题2:细节理解题。根据文中描述They have sharp claws (利爪) at the end of their feet for digging up soil (挖土) and holding onto the ground when they walk.它们有锋利的爪子用来挖土或者在行走时抓住地面，故选C。
小题3:细节理解题。根据文中描述When they are four weeks old, they start eating soft food.当它们四周大时，它们开始吃软的食物，故选B，当它一个月大时。
小题4:细节理解题。根据文中描述When a dog is frightened, it lowers its ears and holds its tail (尾巴) between its legs.当狗受到惊吓时，它会低下耳朵，把尾巴夹在腿中间，故选D。
小题5:主旨大意题。这篇文章主要讲述了狗的一些事情，如狗是如何成为宠物的，狗的外貌和成长等，故选C，狗的有趣事情。
