已知等差数列{an}的前n项和为Sn，且S5＞0，那么下列结论中一定正确的是（

根据短文填空，回答下列问题。

     This is my bedroom. There are many (许多) things in it. You can see a table, a bed, a drawer, a

 dresser, a computer, a bookcase, a sofa, a chair, a backpack, a plant and some books in it. The boocase

  is behind the sofa. The books are on the table and the bookcase. My backpack is behind the door.oh,

 where are the keys? They are on the dresser.

1. Where is  the boocase ? 

    __________________.

2. What is on the table and the bookcase?

    __________________.

3. Where are keys?

    __________________.   

4. Where is the backpack?

    __________________.

5.Can you see a computer in the bedroom?

    __________________.

桂枝芍药知母汤证之热为（）

A.湿热内郁

B.风湿化热伤阴

C.阴虚火旺

D.气分之热

E.血分之热

低温回火主要用于各种切削刀具、冷冲模具，回水后硬度可达HRC（）。

A.50～55

B.55～60

C.58～64

D.60～68

Humans are social animals. They live in groups all over the world. As these groups of people live apart from other groups, over the years and centuries they develop their own habits and ideas, which form different cultures. One important particular side of every culture is how its people deal with time.
Time is not very important in non-industrial societies. The Nuer people of East Africa, for example, do not even have a word TIME that is in agreement with the abstract thing we call time. The daily lives of the people of such non-industrial societies are likely to be patterned around their physical needs and natural events rather than around a time schedule based on the clock. They cook and eat when they are hungry and sleep when the sun goes down. They plant crops during the growing seasons and harvest them when the crops are ripe. They measure time not by a clock or calendar, but by saying that an event takes place before or after some other events. Frequently such a society measures days in terms of "sleeps" or longer periods in terms of "moons". Some cultures, such as the Eskimos of Greenland measure seasons according to the migration of certain animals.
Some cultures which do not have a written language or keep written records have developed interesting ways of "telling time". For example, when several Australian aborigines want to plan an event for a future time, one of them places a stone on a cliff or in a tree. Each day the angle of the sun changes slightly. In a few days, the rays of the sun strike the stone in a certain way. When this happens, the people see that the agreed-upon time has arrived and the event can take place.
In contrast, exactly correct measurement of time is very important in modern, industrialized societies. This is because industrialized societies require the helpful efforts of many people in order to work. For a factory to work efficiently (well, quickly and without waste), for example, all of the workers must work at the same time. Therefore, they must know what time to start work in the morning and what time they may go home in the afternoon. Passengers must know the exact time that an

By saying "Humans are social animals", the author means ______.

A. they live all over the world
B. they are different from other animals
C. they live in one place, district or country, considered as a whole
D. they are divided into many groups

中医治则为：

A．滋养肺阴，利喉开音

B．滋补肾阴，利喉开音

C．滋养肺肾，利喉开音

D．补益脾肺，益气开音

E．行气活血，化痰开音