先花后叶的花卉植物有哪些？举出10种，它们花芽分化和发育有何特点？应如何控制其花期？

技术分析的理论基础主要来自于经济学、财政金融学、财务管理学和投资学。（）

胡适说：“吾意以为诸子自老聃、孔丘并于韩非，皆忧世之乱而思有以拯救之，故其学皆应时而生。”胡适对于社会变化与思想界状况之间的关系分析是 [ ]

A、正确的

B、根本错误的

C、片面的

D、表面的

“Hi，howareya.” some people say when they see a familiar face.The words run together into a mass，all sense and meaning lost. All the same，people do care how you are.After they greet you，it’s likely you will greet them back，with an equally meaningless phrase like，“Can’t complain，can’t complain.”You could probably complain，at length，or share a brilliant thought you were just beginning when a greeting interrupted you.You don’t though，you say，“Great，you？”

You are not giving each other information about your health and well­being.All the same，you are sharing information.You’re acknowledging each other’s positions as acknowledged friends，or at least as accepted acquaintances.And you are reestablishing the ties that may have lapsed(衰退) since yesterday，when you last met at the elevator or the entrance to the train station.

It’s what anthropologist(人类学家) Bronislaw Malinoski called a phatic(交流感情的) communication.Its message is not in the words you use，but in the fact that you speak ritually(仪式上地) accepted words.In Asia，for example，people may ask one another if they have eaten，or if they are busy.They’re not really asking for their lunch menu or their agenda，they are saying hello.A phatic signal merely says, “I see you there.” It says hi.

There’s embarrassment of being near people without acknowledging them.That uncomfortable feeling is one reason why lonely passengers in the subway may behave as if they cannot see anyone around them or may escape their uncomfortable situation with a book.Some people read all the way home，and never turn a page.

Your friend isn’t asking how you are，and you aren’t telling him.However，he is recognizing your existence，and when you answer，you are recognizing his.In addition，the set speech you have shared opens the door to closer communications if both agree.Someday，you may come to real close friendship，and really tell one another how you are.

Meanwhile，people who greet one another this way do care.They care enough to recognize someone’s essential humanity(人性)．They send a signal across the space between，to share，very briefly and lightly，in awareness of one another.

Your greetings prove that neither of you has become a social outcast.How are you？You are still a member of society in good status.You are still the one who knows the rituals and secret passwords necessary to get to work each day.

小题1:When people greet，they ________.

A．want to show their different educational backgrounds

B．show nothing related with the words themselves

C．want to know other people’s privacy

D．express something special小题2:According to Bronislaw Malinoski，a phatic communication ________.

A．is rarely used by Asian people

B．is too complex to be used often

C．helps establish or keep certain relationships

D．often ruins the normal relationships between friends or acquaintances小题3:Some people seldom greet strangers because ________.

A．they want to be polite to others

B．they feel uncomfortable to do it

C．they don’t know when to greet them

D．they want to do something meaningful小题4:What does the text mainly tell us?

A．Greetings should be given better expressions.

B．Greetings convey different meanings to different people.

C．Greetings help prove an individual’s social independence.

D．Greetings help an individual be connected with the society.

脂肪变性最常发生于________器官，其发生机制是________、________和________。

某同学在饮料瓶靠近底部的侧面戳一个小孔，瓶中灌水，再把它悬挂在静止电梯的天花板上，他移开手指，有水流从小孔中射出．若某时刻该同学观察到水流的速率突然变大，下列说法正确的是（　　）

A．电梯可能正在加速上升

B．电梯可能正在加速下降

C．饮料瓶处于失重状态

D．饮料瓶处于完全失重状态