表示乙肝病毒复制活跃，传染性强的标志是（） A.HBsAg B.抗-HBs C.HB

Mr. Read works in an office. He is very busy and has no time to have a good rest. Every evening, when he comes back from his office, he’s always tired and wants to go to bed early. But his wife often has a lot of interesting things to tell him after supper. She doesn’t stop talking until she 1.________________________, but it’s usually too late and Mr. Read has to get up in time in the morning.

One day the man felt terrible and couldn’t go to work. He decided to 2. ____________________. Mrs. Read went with him. The doctor wrote out a prescription and said to Mrs. Read, “The bottle of medicine is for your husband and the pills are for you.”

“For me?’ the woman said in surprise. “I’m fine. I don’t need any medicine!”

“3. ______________________, madam,” said the doctor. “They are sleeping pills. Your husband will soon be all right if you take them.”

关于过敏性肺炎，下列哪项不是其诊断要点（）

A.症状轻或无症状

B.血中嗜酸性粒细胞增多

C.病灶具有迁移性

D.病灶易形成空洞

E.病变短期内吸收

对未取得健康证明而从事食品生产经营的行为应给予行政处罚，因这种行为可能造成的危害是

A．不会有太大的危害

B．可能造成某种传染病的传播

C．可能引发食物中毒事故

D．可能污染食品

E．B+C+D

计算机系统的性能指标主要包括( )。

A．字长

B．主频

C．内存容量

D．运算速度

世界上第一个开办商业广播电台的国家是（）

A.英国

B.德国

C.日本

D.美国