表面灰黑色，有土腥气，无味的药材是（） A.滑石 B.信石 C.雄黄 D

下面各句中的横线上应依次选填的词语正确的一项是（　）

①没有人教他，也不知从什么时候起他______学会了画画，又没跟家人商量______辞职办起了一个书画社。

②那人东张西望，神色慌张，_______十分可疑，很可能就是那个______不定而久未抓到的犯罪嫌疑人张某。

A．径自　　竟自　　形迹　　行迹

B．竟自　　径自　　行迹　　形迹

C．竟自　　径自　　形迹　　行迹

D．径自　　竟自　　行迹　　形迹

关于上市开放式基金，下列的( )是错误的。

A．可以在证券交易所买卖该基金

B．与传统的开放式基金不同，需要通过证券交易所进行申购和赎回

C．可以通过跨系统转托管实现买卖和申购、赎回两种交易方式的转换

D．本质上仍是开放式基金，基金份额总额不固定

基尔霍夫第一定律表明电流具有连续性，在电路的任一节点上，不可能发生电荷的积累，即流入节点的总电流恒等于同一时间内从这个节点流出去的总电量。

对经济周期性波动来说，提供了一种财富套期保值手段的行业属于( )。

A．增长型

B．周期型

C．防御型

D．幼稚型

Attempts to understand the relationship between social behavior and health have their origin in history. Dubos (1969) suggested that primitive humans were closer to the animals (1) they, too, relied’upon their instincts to stay healthy. Yet some primitive humans (2) a cause and effect relationship between doing certain things and alleviating (3) of a disease or (4) the condition of a wound. (5) there was so much that primitive humans did not (6) the functioning of the body, magic became an integral component ofthe beliefs about the causes and cures of heath (7) Therefore it is not (8) that early humans thought that illness was caused (9) evil spirit. Primitive medicines made from vegetables or animals were invariably used in combination with some form of ritual to (10) harmful spirit from a diseased body.

One of the. earliest (11) in the Western world to formulate principles of health care based upon rational thought and (12) of supernatural phenomena is found in the work of the Greek physician Hippocrates. The writing (13) to him has provided a number of principles underiying modern medical practice. One of his most famous (14) , the Hippocratic Oath, is the foundation of contemporary medical ethics.

Hippocrates also argued that medical knowledge should be derived from a (15) of the natural science and the logic of cause and effect relationships. In this (16) thesis, On Air, Water, and Places, Hippocrates pointed out that human well-being is (17) by the totality of environmental (18) : living habits or lifestyle, climate, geography of the land, and the quality of air, and food. (19) enough, concerns about our health and the quality of air, water, and places are (20) very much written in twentieth century.

6（）

A.confirm

B.appreciate

C.tolerate

D.discover