某氢氧化镁和碳酸镁组成的固体混合物14.2克，放入90.2克稀盐稀中恰好完全反应

E

More than seven hundred students will serve for the 2008 Beijing Olympic Games not as volunteers but as interns(实习生), working for months before the event and during the Games to help ensure its success.

A co-operation agreement was signed between the Beijing Organizing Committee for the Games of the XXIX Olympiad (GOCOG) and 16 Beijing-based universities and colleges. The schools will prepare the students to be interns.

Although the interns will work without pay, they are considered different to volunteers, who will also provide services for the Games.

Well-known schools such as Peking University, Tsinghua University, Renmin University of China, Beijing Normal University and Beijing Jiaotong University are included on the list.

The interns will work much longer than the Games’ volunteers, since they have to begin their work at BOCOG as early as one year before the Games start, while most of the volunteers work only during the 16 days of the Games. They have to finish the required lessons of their universities first and then learn more in their specialities to qualify to work for the BOCOG. They will take some special classes on Olympic knowledge and certain professional lessons outside the university to meet the needs of serving in the Olympics.

The 706 interns will be made up of 446 postgraduates, 118 undergraduates and 142 higher vocational students. They will come from such majors as foreign languages, media and communications, logistics and legal affairs.

According to university officials, the undergraduates will be students who have been admitted to college this year (2005) while the postgraduates will be those who enter next year.

72.The interns will be chosen from __________.

A．students whose homes are in Beijing          B．students studying in Beijing

C．only 6 famous schools                     D．schools all over China

73. What’s the difference between the interns and the volunteers?

A．The volunteers receive no pay.             B．The interns work during the Games.

C．The volunteers come mainly from universities. D．The interns provide longer, more specialized services.

74.The chosen students will be busy because they have to __________.

A．learn both in and outside the university     B．graduate ahead of time

C．look for part-time jobs                  D．learn many extra subjects at college

75.A chosen undergraduate will begin to work for BOCOG __________.

A．in his or her first college year            B．in his or her second college year

C．in his or her third college year                 D．in his or her fourth college year

小强的家在某乡镇，其父母在某大城市打工。一年前，小强正准备升小学四年级时，父母把他接过来，并将他安排在该城市的一所学校读书。但是，仅上了几天课，小强就不愿意去学校了，整天在家闷闷不乐。在父母的盘问下，他说自己完全听不懂上课的内容，尤其是英语。此外，也没有同学和他一起玩，他感到很孤单。小强的父母找到了学校的社会工作者，要求为小强提供服务。

[问题]

针对小强目前的问题，社会工作者应采取什么样的介入策略

关于出入境快件报检，以下表述正确的有( )。

A．快件收发货人可以直接办理报检手续

B．快件收发货人应当委托快件运营企业办理报检手续

C．快件运营企业应当以收发货人的名义办理报检手续

D．快件运营企业应当以自己的名义办理报检手续

标准型21-三体的染色体畸变来源是（）

A.染色体的丢失

B.染色体的断裂

C.亲代的生殖细胞在减数分裂时染色体不分离

D.染色体发生易位

E.染色体发生倒位

清朝被称为万园之园的皇家园林是什么？