如图所示，虚线为磁感应强度大小均为B的两匀强磁场的分界线，实线MN为它们的理想下

首字母填空。

1. I got lots of g______ on my birthday.

2. Would you like to p______ some milk into the glass?

3. He won the first prize in the singing c______.

4. You should keep c______ in front of danger.

5. P______ is one of the most important problems in the modern world.

6. I don't play sports every day,because I have less f______ time for myself.

7. There are many tall b______ in our city.

8. Who do you think will w______ the World Cup?

9. The girl likes playing the piano,because she wants to be a p______.

10. I got Liu Xiang's a______ in Beijing last year.

存允许速度120km/h正线进行经常保养作业，作业后线路前后高低容许误差应小于（）。

A.4mm

B.5mm

C.6mm

D.7mm

2010年7月台风“灿都”登陆我国东南沿海，水平风速达到40m/s．一块质量为2kg的石块从山顶无初速地被吹下悬崖，假设山高2000m，若风速不变，不计空气阻力，g=10m/s²，则下列说法中正确的是（　　）

A．石块做平抛运动

B．石块下落过程中加速度恒定不变

C．石块落到地面时与初始位置的水平距离等于800m

D．石块落地时的重力的瞬时功率为4000W

既能疏肝下气、又能暖肝止痛的中药是（）

A.干姜

B.花椒

C.胡椒

D.吴茱萸

E.山茱萸

某公司资金总额为1000万元，负债总额为400万元，负债利息率为10%，普通股为60万股，所得税税率为33%，息税前利润为150万元。[要求](1)计算企业财务杠杆系数和每股利润；(2)若息税前利润增长15%，计算该公司每股利润的增加额。