女，40岁，6个月前无明显诱因下粪便表面有时带血及黏液，伴大便_爱下问搜题

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问题单项选择题共用题干题

女，40岁，6个月前无明显诱因下粪便表面有时带血及黏液，伴大便次数增多，每日3～4次，时有排便不尽感，但无腹痛。曾于当地医院按“慢性细菌性痢疾”治疗无效。发病以来体重下降3kg。

经直肠指诊，距肛缘约10cm触及一肿块。应考虑采取何种术式（）

A.Miles手术

B.直肠息肉摘除术

C.Dixon手术

D.乙状结肠造口术

E.左半结肠切除术

答案

参考答案：C

阅读理解

阅读理解。

I have six baskets. Three are big. Three are small. I have some pears and some oranges. I put three

pears in each small basket, and I put three oranges in each big basket and one orange in each small basket. The number of the oranges is my age.

1. I have_______ pears.

A. three

B. five

C. seven

D. nine

2. I have_______ oranges.

A. six

B. eight

C. ten

D. twelve

3. What are those in the three small baskets?

A. Nine pears.

B. Nine oranges.

C. Three pears and nine oranges.

D. Nine pears and three oranges.

4. Where are the pears?

A. In the three big baskets.

B. In the three small baskets.

C. In a big basket.

D. In a small basket.

5. I'm_______ years old.

A. nine

B. ten

C. eleven

D．twelve

填空题

若要求滤波器在数百兆赫的中心频率上，带宽只有几赫，可用下列电路实现的是（）。