患者男性，34岁，因发现右侧睾丸持续增大3个月，右侧阴囊疼痛1天来诊。患者于20年前

根据短文判断下列句子的正(T)误(F)。

    Yesterday was Saturday. My family all went to the amusement park. There were many people there. I

was too happy, so I played with the clown(小丑) by myself all day. I was missing. My father and my moth

-er looked for(寻找) me anywhere. But they couldn't find me. At that time, I cried harder at the amusemen

-t park.

    The policeman found me and asked me,"Why do you cry?  Why is there only one?"I told him all the thin

-gs. At last,he helped me find my father and my mother.

( ) 1. I played with my family.

( ) 2. I went to the safari park.

( ) 3. My father and my mother coundn't find me at last.

( ) 4. The policeman found me at the amusement park.

( ) 5. I don't like playing with my father and my mother at the safari park.

将某溶液逐滴加入溶胶内，开始时产生沉淀，继续滴加时沉淀又溶解，该溶液是

A．

B．

C．

D．

染色体数目异常的表现不包括（）。

A.单倍体

B.二倍体

C.三倍体

D.四倍体

E.五倍体

患者，女性，18岁，体操运动员在跳马时不慎致颈髓损伤，造成损伤平面以下本体感觉丧失，而运动和痛温觉存在，应考虑（）

A.后束综合征

B.脊髓震荡

C.半切综合征

D.前束综合征

E.中央束综合征

外商投资企业和外国企业所得税的纳税人是（）。

A.中外合资经营企业

B.外国企业

C.中外合作经营企业

D.内资企业设在境外的分支机构