主要表现是症状反跳（） A．药物依赖性 B．停药综合征 C．遗传药理学不良反应 D．

氧可以改变有色金属的可浮性。

不属于松的货币政策的主要政策手段是（）。

A.增加货币供应量

B.降低利率

C.放松信贷控制

D.提高利率

某工程招标文件中，混凝土估计工程量为10000m³，合同中规定混凝土单价为400元/m³，若实际完成工程量与估计工程量的变动大于10%时，则进行调价，调价系数为0.9。竣工时实际完成混凝土工程量为15000m³，则混凝土工程款为( )万元。

A．600

B．584

C．580

D．540

This autumn term, spring term, or academic year program offers advanced students an opportunity to improve their spoken arid written Chinese, and to be familiar with a range of people and organizations that are helping to shape China’s relationship with the United States and the world. All students who take intermediate or advanced Chinese language may take a choice to participate in the Professional Development Program that includes guest lectures by Chinese and foreign professionals on areas such as politics, foreign affairs, economics, trade, media, art and culture. This program is supplemented by field trips and short journeys in and around Beijing.
Housing and meals: Students live in the foreign student dormitories and take meals in the dormitory dining hall or local restaurants.
Requirements: Two years of college-level Chinese and one Chinese studies courser graduate students accepted.
Program Fee: 2005 Autumn Term: ＄6995; 2006 Spring Term: ＄7995. Fees include tuition, housing and all meals, cultural activities, local journeys and field trips, insurance, and the International Student Identity Card.

How many requirements are there for one who wants to be accepted to the program

戒指戴在无名指上，说明此人（）。

A、处于需要追求中

B、正在热恋中

C、独身

D、已经结婚