某同学用玻璃棒沾取酚酞试液在滤纸上画了一朵月季花,将滤纸放到浓氨水的瓶口上放,滤

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问题:

某同学用玻璃棒沾取酚酞试液在滤纸上画了一朵月季花,将滤纸放到浓氨水的瓶口上放,滤纸上很快出现一朵   ____  的月季花。再把此滤纸放到浓盐酸的瓶口上放,花儿逐渐 _____       

考点:酸碱指示剂
题型:填空题
判断下列句子与图意是否相符,相符的在括号里打“√”,不相符的打“×”。
( ) 1. I'm going to have a music class. 
( ) 2. I'm going to the cinema this weekend. 
题型:填空题

川芎在酸枣仁汤中配伍的主要用意是()。

A.疏风止痛

B.活血行气

C.调养肝血

D.疏风活血

E.疏达肝气

题型:填空题

评标委员会在评标报告中依法推荐中标候选人,中标候选人的排列顺序应是在满足其他条件的前提下,价格按照由低至高选择排列前( )名。

A.2

B.3

C.4

D.5

题型:填空题

At the beginning of the twentieth century, North American society held, as an ideal, the Nuclear Family. This presumably perfect residential, social, and economic unit consisted of an adult male, an adult female and their minor children. This structure was thought to be stable and long lasting.
However, a few decades later, the structure of that ideal family was being altered radically even while it was being touted as the structure to be aimed for. Popular magazines bemoaned the loss of the Nuclear Family and its replacement with inferior forms.
There are a number of factors that are acting in concert to apply pressure on the Nuclear Family and generate a variety of new structures. Some of these are:
The definition of marriage has changed somewhat in that few people now consider it to last "until death do us part." The concept of monogamy (the marriage of one man and one woman) has been modified to a form now referred to as serial monogamy (the marriage of one man and one woman at a time). This reflects the increasing equality of women and men in terms of economic advantage and the recognition that many women no longer depend on men for their survival. Women are acquiring independence and have become empowered to make their own choices. With this independence, the need to form a relationship with a man becomes less important. This change embodies the concept that the marriage is temporary and can be terminated by either partner at any time. Associated with this, of course, is the relaxation of the divorce laws and the significant reduction of the shame that had one time been attached to divorce.
The economy of North America has resulted in a two-tier system of a few rich who control most of the resources and a large portion of the population who control almost none of the resources. Because of this, many couples are forced to have both partners with full-time jobs outside the home. There are unintended byproducts of the need for a double income. The most important of these is the replacement of a mother-oriented socialization of children to a "stranger-oriented" socialization system reflected in the growth of the childcare industry. Also, either partner is financially able to end the marriage without significant hardship.
The combination of these changes will in the coming decades have a profound effect on the structure of the family of North America. As a result, the family will be a fluid, constantly changing structure with variable household arrangements as the norm.

" ’Stranger-oriented’ socialization system" in Paragraph 5 probably means______.

A.strangers come home to take care of children

B.neighbors don’t know each other

C.mothers work outside their home and become strange to their children

D.children become strange to their parents

题型:填空题

药物降解的两个主要途径是()和()。

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