指导操作是具体示范操作和（）指导训练。

阅读短文用合适的单词填空。

     My name is John Black. I come from England. I study in a middle school in London. My father

teaches Chinese in a school. My mother doesn't work. She stays at home and does the housework.

I go to school five days a week. I like playing football and listening to music. I don't have much

homework to do. After school, I help my mother do the housework. I love my father and mother.

     John is an _____ (1) boy. He is a middle school _____ (2). His father is a _____ (3). His mother

has no _____ (4). John doesn't go to school on _____ (5) or _____ (6). He _____ (7) playing football.

He _____ (8) have much homework to do. He often _____ (9) his mother do the housework. He is

a _____ (10) boy.

下列各项，组成药物中不含白芍的方剂是（）

A.羚角钩藤汤

B.镇肝熄风汤

C.大秦艽汤

D.天麻钩藤饮

E.大定风珠

周围性面神经麻痹患者，在什么情况不宜进行低频电疗（）

A.面肌痉挛

B.病情无好转

C.同时针灸

D.同时高频电疗

E.合并眼部疾病

钢丝绳直径直径相对于公称直径减少（）%或更多时，即未发生断丝，钢丝绳也应报废。

A、5

B、7

C、10

D、12

改良土掺入（）时，其初凝时间应（）3h，终凝时间（）6h。