四年级有男生124人，女生120人，四年级的学生数正好是全校人数的16，全校有学

阅读短文，在改写后的短文空白初填入一个适当的词，使其完整通顺。

     Most American businesses are open five days a week. American school children go to school five days

a week, too. American families usually have a two-day weekend. The weekend is Saturday and Sunday.

Over the weekend, people spend their time in many ways. Many families enjoy weekend together. They may

go shopping, go for a drive, or visit friends. They may also invite friends over and have a party at home. Many

families take part in sport during the weekend. Running, hiking, playing volleyball and swimming are popular

in summer. Skiing and skating are the favorite winter sports. Weekends are also a time for American families

to work on something in their yards or in the house. Many families plant flowers and have vegetable gardens.

Some families spend the weekends to paint or repair their houses. For most Americans, weekend are very busy.

     Most Americans    1    five days a week and they have a two-day    2   The people of many families spend

their time in different    3  . They may go out to see their friends or   4    friends to come to have a party at

home. Over the weekend, many people are interested in    5   , some of them like to go   6    in summer and 

  7    in winter. Some families   8    with their flowers and    9   in their gardens. The others are busy   10  

 or repairing their houses at the weekends.

1._____ 2._____ 3._____ 4._____ 5._____ 6._____ 7._____ 8._____ 9._____ 10._____

哪项属于克罗恩病的肠外表现（）。

A.瘘管形成

B.腹泻

C.腹痛

D.腹腔内脓肿

E.杵状指

简述我国的会计基本制度？“财务三表”指哪“三表”？

机油粗滤器上装有旁通阀，当滤芯堵塞时，旁通阀打开，（）。

A.使机油不经过滤芯，直接流回油底壳

B.使机油直接进入细滤器

C.使机油直接进入主油道

D.使机油流回机油泵

慢性支气管炎的病理变化是

A．化脓性炎
B．浆液性炎
C．卡他性炎
D．慢性特异性炎症
E．慢性非特异性炎