商品品种结构必须与人们的（）及其变化相适应。A.生活习惯； B.实际需要； C.消费

陈旧性心肌梗死患者，心电图示频发室性期前收缩。首选药物是（）。

A.慢心律

B.普罗帕酮（心律平）

C.奎尼丁

D.β受体阻滞剂

E.钙离子通道阻滞剂

用8、5、1、0中的三个数组成同时能被2、5整除的最大三位数是______；既有约数3又是5的倍数的最小三位数是______．

关于手机银行以下说法不正确的是（）

A、当月产生的月服务费会于下月扣取

B、移动用户开通后未曾登录和进行收费确认，不需收取服务费

C、移动新开通客户过了免费体验期，就要收取服务费

D、收费客户可以转化为免费客户，免费客户您可以在手机上自行申请为收费客户

1842年中英《南京条约》第二条规定：自今以后，大皇帝恩准大英国人民带同所属家眷，寄居大清沿海之广州、福州、厦门、宁波、上海五处港口，贸易通商无碍。对此理解最准确的是（）

A.设立五个租界

B.要求设立公行

C.规定五口通商

D.中国自开商埠

Do animals have a culture What do we mean by "culture" Lately social scientists have begun to ask if culture is found just in humans, or if some animals have a culture too. When we speak of culture, we mean a way of life a group of people have in common. Culture includes the beliefs and attitudes we learn. It is the patterns of behavior that help people to live together. It is also the patterns of behavior that make one group of people different from another group.
Our culture lets us make up for having lost out strength, claws, long teeth, and other defenses. Instead we use tools, cooperate with one another, and communicate with language. But these aspects of human behavior, or "culture," can also be found in the lives of certain animals. Animals can make tools, for example. We used to think that the ability to use tools was the dividing line between human beings and other animals. Lately, however, we have found that this is not the case. Chimpanzees(黑猩猩) can not only use tools but actually make tools themselves. Animals can also share knowledge with each other and use their own language to communicate. So it may be important for us to know that the line dividing us from animals is not as clear as we used to think.

Which of the following statement is TRUE

A．The ability to use language separates human beings.

B．We can be certain that animals have a culture too.

C．Social scientists doubt if animals have a culture too.

D．Some traditional ideas about the difference between human beings and animals may be wron