光电效应实验的装置如图所示，则下面说法中正确的是（ ） A．用紫外光照射锌板，验

对临床试验结果的评价要点（）

A.是否真正随机化分组

B.实验组与对照组的可比性

C.是否采用盲法及其执行情况

D.样本是否适合

E.疗效判定标准是否恰当

Getting a good education is more important today than ever before. It is the best thing you can do to build a better future for your children and yourself.

Most children in Canada attend public schools. Public schools are completely founded by governments through tax (税收) income. Boys and girls attend the same school and share the same courses and classes. Schooling in Canada is provided in English and in French.

The rest of Canadian children attend private schools，which are supported mainly by fees (费) paid directly by parents. Some private schools enroll (招收) only boys or girls.

By law，children must attend school from age 5 to 16.Children are usually in school between 8：30 or 9：00 a．m.，and 3：00 or 4：00 p．m.Monday through Friday，from September to the middle of June. There are several different levels in the Canadian education system. The first is called Elementary Schools. In most provinces Elementary Schools include Kindergarten through Grade 7 or 8.

From Grade 8 or 9 through 12 or 13，children go to Secondary School or High School. High School students must take certain courses for several years，such as English or French and mathematics. Some courses help students get a job after they graduate from school. Other courses prepare students for college or university. In Canada，teenagers usually make these choices for themselves，with the advice of their teachers，guidance counselor (指导教师) and parents.

Schools usually offer extra activities at the end of the normal school day. These include sports，games，music and clubs.

Most elementary and high schools encourage parents to take part in school activities. Parents' nights are organized from time to time. These are chances for parents to discuss their children's progress with teachers. You may wish to bring a friend with you. After graduating from high school，many young adults continue their studies through post­secondary education.

小题1:According to the passage，students in Canada can get education for free in ________.

A．private schools

B．universities

C．public schools

D．community (社区) college小题2:Which of the following statements is TRUE according to the passage?

A．Most high school students choose their courses against their wills.

B．The students do their after­class activities all the afternoon.

C．Parents are allowed to take part in school activities in the morning.

D．If you don't send your five­year­old child to school in Canada—you break the law in Canada.小题3:Which of the following is NOT true according to the passage?

A．There are only boys in some private schools.

B．There are only boys in some public schools.

C．There are both boys and girls in some private schools.

D．There are both boys and girls in all public schools.小题4:We can tell that from the middle of June to August，the students in Canada are ________.

A．on school holidays

B．in school

C．at work

D．preparing for the final examination

GIS组合电器遇有哪些情况，应申请立即停电处理？

(1)打开考生文件夹下的EXCEL032A.xls(内容如下)文件，将Sheet1工作表的A1:M1单元格合并为一个单元格，内容水平居中；计算全年平均值列的内容(数值型，保留小数点后两位)，计算“最高值”和“最低值”行的内容(利用MAx函数和MIN函数，数值型，保留小数点后两位)；将A2:M5区域格式设置为自动套用格式“古典2”，将工作表重命名为“经济增长指数对比表”。

(2)选取“经济增长指数对比表”的A2:L5数据区域的内容建立“数据点折线图”(系列产生在“行”)，标题为“经济增长指数对比图”，设置Y轴刻度最小值为50，最大值为210，主要刻度单位为20，分类(X轴)交叉于50；将图插入到表的A8:L20单元格区域内，保存EXCEL032A.xls文件。

（）以上部位的粘膜上皮细胞均有纤毛运转系统，具有清除功能。

A.气管

B.支气管

C.肺泡

D.毛细支气管