计算（-2009）0+|1-3|-2sin60°=______．

Cats are the most popular pets among Americans. So it is not surprising there are many expressions about cats. Do you know any of them? Now let me introduce some to you.

Some cats like to catch small birds, like canaries. If someone looks very proud or satisfied with himself, we say he looks like the cat that ate the canary.

Sometimes, a cat likes to play with a small animal it catches. So if you play cat and mouse with someone, you change between different kinds of behavior when dealing with another person. For example, a child might offer something sweet to her little brother, and then take it away when reaches for it.

A cat will often catch a small animal and present it to its owner. The saying that looks like something the cat dragged in describes something in bad condition.

A fat cat is a person with a lot of money.

There are many other expressions about cats in America. How interesting! Which kind of cat are you, or which kind would you like to be?

小题1:Americans like ________ best as pets.

A．dogs

B．pigs

C．cats

D．mice小题2:The canary is a kind of ________.

A．dog

B．cat

C．bird

D．fish小题3: If you have much money, we can call you ________.

A．a fat cat

B．a happy cat

C．a thin cat

D．a sad cat小题4:If someone always thinks highly of himself, we can say _________.

A．he plays cat and mouse with someone

B．he looks like the cat that ate the canary

C．he is a lazy cat

D．he has dragged in something小题5:The passage introduces us ________ expressions about cat.

A．one

B．two

C．three

D．four

性别鉴定常用的方法包括()

A.检测性染色体

B.检测性激素水平

C.检测H-Y抗原

D.检测DNA遗传标记

E.检测血型

有一个作家说：所谓的家，只不过是你父辈流浪的终点，你流浪的起点罢了。而在我心里，家是一个幸福而奢侈的词，是在无数灯熄灭之后而它依然温暖着我的一盏灯；是在所有门都关闭之后还在虚掩着等候我的一扇门。我常常感谢岁月，也感谢我曾经走过的每个地方，是它们让我日渐成熟，懂得珍惜自己，懂得善待生活，体会到走过的日子是一种沉甸甸的美。
通过这段话可以知道“我”与“作家”对“家”的界定是：

A．“我”温暖，“作家”悲凉
B．“我”温暖，“作家”沧凉
C．“我”热烈，“作家”沧凉
D．“我”温馨，“作家”悲凉

疼痛治疗常用的心理治疗，以下哪一项除外

A．生物反馈
B．安慰剂
C．心理咨询
D．口服止痛药
E．忽略疗法

按网络的覆盖范围分类，以太网(Ethernet)是一种 【2】 。