影响煤热解的主要因素有哪些？

骨盆环由下列哪些结构构成（）。

A.髂骨与骶尾骨

B.耻骨与骶尾骨

C.髋骨与骶尾骨

D.髋骨与尾骨

E.耻骨、坐骨与骶骨

Botany, the study of plants, occupies a special position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest (含糊的) of insight. It is impossible to know today just what our Stone Age ancestors knew about plants, but from what we can observe of pre-industrial societies that still exist, a detailed learning of plants and their properties must extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of peoples, not only for food, but also for clothing, weapons, tools, eyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognized accurately hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.

Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer productions the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the wonder of agriculture; cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild and the built up knowledge of tens of thousands of years of experience and close relationship with plants in the wild would begin fade away.

1. Which of the following statements about early humans is expressed in the passage?

A. They probably had extensive knowledge of plants.    

B. They thought there was no need to cultivate crops.     

C. They did not enjoy the study of botany.      

D. They placed great importance on the ownership of property.

2. What does the comment “This is logical.” In the first paragraph mean?

A. There is no clear way to determine the extent of our ancestor’s knowledge of plants.           

B. It is not surprising that early humans had a detailed knowledge of plants.

C. It is reasonable to assume that our ancestors behaved very much like people in pre-industrial societies.       

D. Human knowledge of plants is well organized and very detailed.

3. According to the passage, why has general knowledge of botany begun to fade?

A. People no longer value plants as a useful resource.       

B. Botany is not recognized as a special branch of science.

C. Research is unable to keep up with the increasing numbers of plants.

D. Direct contact with a variety of plants has decreased.

4. In the second paragraph, what is the author’s purpose in mentioning “ a rose, an apple, or an orchid”?

A. To make the passage more poetic.

B. To give an example of plant that are attractive.

C. To give botanical examples that all readers will recognize.

D. To explain the variety of botanical life.

5. According to the passage, what was the first great step toward the practice of agriculture?

A. The invention of agricultural tools and machinery.       

B. The development of a system of names for plants.

C. The discovery of grasses that could be harvested and replanted.         

D. The changing diets of early humans.   

阅读理解。

     It seems some people have something bad to say about

Facebook,the social media website that now has attracted

more than 300 million members.To them I have only this

to say: Stop please!

     A recent article in the Wall Street Journal blamed                

Facebook's ability to ruin riendships,saying that it limits communication to typing and

encourages people to spend far too much time with friends they have never met.

     Having used Facebook since its first year,I find these arguments false.The simple

truth is that the problems are only a symptom of Facebook abuse.Like many things,it is

only as harmful to your life and relationships as you allow it to be.Consider arguments

against watching too much TV and overeating.

     Try using Facebook to find friends who may have long ago changed their e-mail

addresses and phone numbers,to find out what your old college friends are up to,to

congratulate your friends on their latest birthdays,to share pictures and articles you find

interesting,and to join in the discussion about them with your friends.

     Sure,I had days when I wasted a little more time on Facebook than I should,but I'm not

going to blame Facebook for my own laziness.If Facebook wasn't there I would have

found something else to waste time on.To my "friends": If you don't feel like broadcasting

your life stories on your Facebook,don't.If you tire of my personal updates,ignore them.If

you don't want to join in the popular online games,don't.It's a fun tool at your fingers that

can be used for both good and bad.If you don't like using Facebook,don't.

     I am now a consultant at the Department of State.I use Facebook to keep in touch with

friends,family,and colleagues who live and work all over the world.

1．Why did the article in the Wall Street Journal blame Facebook?______

A．Because it makes people spend too much time online.

B．Because it can make people lose their real－life friends.

C．Because it's as harmful to people's lives as watching TV.

D．Because it encourages people to make friends with strangers.

2．What does the author suggest using Facebook to do?_____

A．To find out lost e－mail addresses and phone numbers.

B．To arrange appointments with our old college friends.

C．To collect interesting pictures and articles from our friends.

D．To keep in touch with friends whom we haven't called for long.

3．We can imply from the passage that by using Facebook we can________.

A．read others' personal updates

B．write our life stories online secretly

C．decide who can read our life stories

D．refuse to join in popular online games

4．The author writes the last paragraph to________.

A．prove that Facebook can be well used

B．gain supports from the Department of State

C．show that Facebook is used all around the world

D．introduce how she uses Facebook as a consultant

5．What's the main idea of this passage?_____

A．We should save our friendships.

B．Many people put blame on Facebook.

C．It is ourselves to blame,not Facebook.

D．Facebook is becoming more and more popular

计划生育协会“五老”指的是：老党员、（）、老模范、（）、老长辈。

《突发林业有害生物事件处置办法》规定，公民、法人或者其他组织发现有疑似突发林业有害生物事件等异常情况的，应当向（）人民政府林业主管部门反映。