阐明有效积温法则应用的范围。

(31)到(35)题使用下列数据表。
“学生”表：学号C(8)，姓名C(8)，性别C(2)，系名(10)，出生日期D
“课程”表：课程编号C(4)，课程名称C(12)，开课系名C(10)
“成绩”表：学号C(8)，课程编号C(4)，成绩I

利用SQL派生一个包含“课程名称”、“姓名”和“成绩”的视图，要求按“课程名称”升序排序，正确的命令是( )。

A．CREATE VIEW view1 AS;
(SELECT 课程.课程名称,学生.姓名,成绩.成绩;
FROM 课程 INNER JOIN 成绩;
INNER JOIN 学生;
ON 成绩.学号=学生.学号;
ON 课程.课程编号=成绩.课程编号;
GROUP BY 课程名称)

B．CREATE VIEW View1 AS;
(SELECT 课程.课程名称,学生.姓名,成绩.成绩;
FROM 课程 INNER JOIN 成绩;
INNER JOIN 学生;
ON 成绩.学号=学生.学号;
ON 课程.课程编号=成绩.课程编号;
ORDER BY 课程名称)

C．CREATE VIEW view1 AS;
SELECT 课程.课程名称,学生.姓名,成绩.成绩;
FROM 课程 INNER JOIN 成绩;
INNER JOIN 学生;
ON 成绩.学号=学生.学号;
ON 课程.课程编号=成绩.课程编号;
GROUP BY 课程名称

D．CREATE VIEW view1 AS;
SELECT 课程.课程名称,学生.姓名,成绩.成绩;
FROM 课程 INNER JOIN 成绩;
INNER JOIN 学生;
ON 成绩.学号=学生.学号;
ON 课程.课程编号=成绩.课程编号;
ORDER BY 课程名称

假定A国2012年的待售商品数量为5万亿件，平均每件商品的价格为8元，货币流通次数为5次。由于生产的发展，2013年A国货币的需求量增加了25%，但实际发行了15万亿元，在其他条件不变的情况下，这时的物价      ，原来标价为30元的M商品，现在的价格是      。

A．上涨25% 37.5元

B．下跌25% 20元

C．上涨25% 37.5元

D．上涨50% 45元

我们在夏天吃“沙瓤”西瓜时，如果仔细观察“沙瓤”则可看到“沙瓤”中有很多晶亮的小颗粒，每个小颗粒实际上是一个细胞．下列哪一项是该“沙瓤”细胞的特点（　　）

A．细胞较小，具有较大的液泡和极薄的细胞壁

B．细胞较大，具有较大的液泡但无细胞壁

C．细胞较小，具有较小的液泡，但无细胞壁

D．细胞较大，具有较大的液泡和极薄的细胞壁

"Congratulations, Mr. Jones, it’s a girl. "

Fatherhood is going to have a different meaning and bring forth a different answer from every man who hears these words. Some feel proud when they receive the news, while others worry, wondering whether they will be good fathers. Although there are some men who like children and may have had considerable experience with them, others do not particularly care for children and spend little time with them. Many fathers and mothers have been planning and looking forward to children for some time. For other couples, pregnancy was an accident that both husband and wife have accepted willingly or unwillingly.

Whatever the reaction to the birth of a child, it is obvious that the change from the role of husband to that of father is a difficult task. Yet, unfortunately, few attempts have been made to educate fathers in this re-socialization process. Although many good books have been written about American mothers, only recently have some books discussed the role of a father.

It is argued by some writers that the transition to the father’s role, although difficult, is not nearly as great as the transition the wife must make to the mother’s role. The mother’s role seems to require a complete transformation of daily routine and adaptation to a new life, on the other hand, the father’s role is less demanding and immediate. However, even though we have mentioned the fact that growing numbers of women are working outside the home, the father is still thought by many as the breadwinner in the household.

It is stated in the passage that（）

A. some parents are not prepared to have a child

B. young couples do not like children at all

C. working couples do not have much time to take care of their children

D. many parents look forward to having a boy as their first child

关于地球自转真正周期的叙述，正确的是（）

A.24小时

B.一个太阳日

C.23小时56分4秒

D.旋转360º59′所花的时间