阅读以下对话，选出所给问题的正确答案。

Wu Yifan: Excuse me, how can I get to the zoo?

Policeman: Are you going on foot?

Wu Yifan: Yes.

Policeman: Turn left at the library. Then go straight to the traffic lights. Turn left at the school. That's Shengli

                 Street.

Wu Yifan: OK. Then what?

Policeman: Walk straight for three minutes. The zoo is on the right. You can see it.

Wu Yifan: Thank you very much.

Policeman: You are welcome.

1. — How does Wu Yifan go to the zoo?  — He goes to the zoo ____________.

A. on foot

B. by bike

C. by bus

2. When (当……的时候) he gets to the library, he should ____________ the traffic light.

A. turn left at

B. go straight to

C. turn right at

3. The zoo is ____________ of Shengli Street.

A. on the left

B. in the middle

C. on the right

患者，男性，60岁。持续性上腹疼痛伴腰背部放射痛8小时，恶心、呕吐，吐后腹痛无减轻。既往有胆总管结石病史。查体：体温38.2℃，腹略膨隆，上腹正中压痛，轻度肌紧张，反跳痛。移动性浊音阳性，肠鸣音减弱。血白细胞14×10⁹/L，尿胆红素（-）。

此病人最可能的诊断（）

A.胆道出血

B.急性胰腺炎

C.急性胆囊炎

D.胆石性肠梗阻

E.急性梗阻化脓性胆管炎