有人统计过,一平方毫米蓖麻的叶片,栅栏组织中含有叶绿体430.000个,而海绵组

题型:选择题

问题:

有人统计过,一平方毫米蓖麻的叶片,栅栏组织中含有叶绿体430.000个,而海绵组织中仅含有叶绿体90.000个.这个材料主要说明(  )

A.叶片上面的绿色比下面的深些

B.叶片上面的绿色比下面的浅些

C.叶片两面的绿色深浅一样

D.叶片的颜色是绿色的

考点:叶片的结构
题型:选择题

关于无形资产的摊销方法,正确的做法有______

A.自取得当月起,在预计使用年限内分期平均摊销

B.自取得次月起,在预计使用年限内分期平均摊销

C.统一采用直线法进行摊销

D.无法可靠确定预期实现方式的,应采用直线法摊销

E.按月摊销时,一般计入管理费用

题型:选择题

从义和团运动开始,中国人民对帝国主义的认识达到理性认识的程度。

题型:选择题

一个计算机算法是对特定问题求解步骤的一种描述。__(1)__并不是一个算法必须具备的特性;若一个算法能够识别非法的输入数据并进行适当处理或反馈,则说明该算法的__(2)__较好。

空白(2)处应选择()

A.可行性

B.正确性

C.健壮性

D.确定性

题型:选择题

在软件测试设计中,软件测试的主要目的是

A.实验性运行软件

B.证明软件正确

C.找出软件中全部错误

D.发现软件错误而执行程序

题型:选择题

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.

10()

A.discharge

B.exclude

C.dismiss

D.expel

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