以下哪种不是常见胆管系统疾病（） A.胆囊运动障碍 B.胆石症 C.胆囊炎 D.原发

Home Alone

It was Sunday afternoon. My brother and I were alone at home. My parents went for a party and asked me to look after my brother.  I was doing my homework while my younger brother was watching TV. Suddenly the doorbell rang. Ding-Dong!  My brother thought that it was our parents, so he opened the      1  quickly.

A tall man wearing a black raincoat stood outside. He said that he came to sell books and asked politely     2  our parents were at home.

Without thinking, my brother said, "No." Then the man asked if we would like to 3 some story books. I refused him. When I wanted to close the door, he suddenly pushed the door very      4   and came into our house.  He took out a     5    and ordered me to tie up my brother’s hands with a rope.  I tied up his hands in a special way so my brother could untie

     6    easily. The man then tied my hands up and locked     7    of us in the kitchen. Soon, he went upstairs to     8  money. I taught my brother to untie the rope on his    9 .He then untied me. I rushed to the telephone to call the police,     10     the line was dead. The doors were all locked from the outside. It was lucky that the man      11   to lock the kitchen window. We got out of the house through the kitchen window and went to the   12 pay phone to call the police.

Soon   13  came to our house and the man was caught. By that time, my parents had come home. We told them the whole story. My parents were   14 that we were not hurt. They told me that I should stop my brother from   15 the door to strangers. I learnt a lesson on safety.

(    ) 1. A. window         B. door         C. book        D. fridge

(    ) 2. A. if               B. why         C. when        D. how

(    ) 3. A. lend         B. borrow      C. sell            D. buy

(    ) 4. A. politely           B. slowly      C. hard        D. quietly

(    ) 5. A. book             B. knife       C. gift        D. pen

(    ) 6. A. himself      B. myself          C. herself         D. themselves

(    ) 7. A. none          B. neither         C. both        D. all

(    ) 8. A. look at            B. look after  C. look like       D. look for

(    ) 9. A. feet              B. hands       C. neck        D. legs

(    ) 10. A. and         B. so             C. or          D. but

(    ) 11. A. wanted          B. remembered   C. forgot          D. tried

(    ) 12. A. farthest        B. nearest         C. largest         D. smallest

(    ) 13. A. my friends        B. the police       C. the neighbors    D. my parents

(    ) 14. A. glad            B. angry       C. sad         D. sorry

(    ) 15. A. cleaning        B. closing     C. locking         D. opening

在牙周炎的治疗中消除病因是治疗的第一阶段，在这个阶段中的治疗中不包括（）

A.消除龈上和龈下牙石

B.纠正食物嵌塞

C.口腔卫生指导

D.咬合调整

E.牙周手术

进行预调查最常用的抽样方法是（）

A.单纯随机抽样

B.系统抽样

C.分层抽样

D.整群抽样

E.方便抽样

地球绕日进行公转，当太阳光线垂直照射到南半球回归线上时，是北半球的（）。

A.夏至日

B.冬至日

C.春分日

D.秋分日

下列关于股票的表述正确的有（）。

A.股票的持有人是债权人

B.股票是一种可以转让但不能退还的证券

C.股票是物权证券

D.股票是证权证券

E.股票是非固定收益证券