形成腹股沟管外环的是（） A.联合肌腱 B.腹横肌 C.腹内斜肌 D.腹外斜肌腱 E

     In America, students are also very busy every day even(甚至)at the weekend!In the morning,

students get up early. Then they have a quick breakfast. Some even don't have breakfast. At school,

they have many subjects to learn. After school, their parents also let them learn many other things,

such as drawing, dancing, Chinese, playing the piano and so on. At the weekend, they also have to

learn thesethings. They can't do what they like, such as watching TV, playing games, shopping and

so on.

     And they usually do much homework. Jenifer, a middle school girl in New York, says she doesn't

want to learn so much. But her parents always say, "If you don't learn much, you will fall behind the

other students."

     In a word, all the students in the world are very busy even in the most developed (发达)

country-America.

1. When are American students busy?

A. On weekdays.                    

B. At the weekend.

C. During the holidays (假期).        

D. Every day.

2. Jenifer is _____.

A. a middle school girl in New York      

B. a middle school girl in China

C. a happy student                    

D. a bad student  

3. After school, some students still (仍然) _____.

A. have piano lessons                  

B. have dancing classes

C. learn drawing                      

D. all of the above  

4. What does "fall behind" mean in the passage?

A. 失败          

B. 掉落          

C.落后          

D. 超越

5. Which is the best title (标题) for this passage?

A. The Busy Parents.  

B. The Busy Children.  

C. The Happy Children.  

D. Study Easy

列式计算：

（1）从160里面减去一个数得55，减去的数是多少？

（2）920减去630与5的商，差是多少？

下列订货成本中属于变动性成本的是（）。

A．采购部门管理费用

B．采购人员的固定工资

C．订货业务费

D．预付订金的机会成本

产后血晕

有以下程序：
#include ＜stdio.h＞
void swap1(int c[])
int t;
t=c[0]; c[0]=c[1]; c[1]=t;

void swap2(int c0,int c1)
int t;
t=c0; c0=c1; c1=t;

main()
int a[2]=3,5,b[2]=3,5;
swap1(

A．; swap2(b[0],b[1]);