That little boy preferred ________ out t

用于治疗血虚便溏时应首选（）。

A.酒炙当归

B.油炙当归

C.土炒当归

D.当归炭

E.当归头

根据句意及汉语提示完成句子。

1. There has been not much _____ (疾病) in the village this winter. The villagers are all healthy.

2. Nothing will _____(阻止) us from reaching our aims.

3. It's snowing hard. The ground is _____ (覆盖) with snow.

4. Take this _____ (药) ,and have a good rest, you can feel better.

5. I _____ (猜想) you don't agree with me.

6. Can you tell me the _____(差异) between the two words, Tom?

7. I have been there many times in the _____ (过去).

8. Computer was invented in 1946. It _____ (改变) a lot all over the world.

蜗杆传动的传动比可达（）。

A.1000

B.2000

C.1500

男性，44岁。肛门左侧红肿热痛1周。膝胸位检查发现距肛口4cm处肿胀隆起，范围约5cm，中心有波动，初步诊断（）

A.血栓性外痔

B.炎性外痔

C.肛旁皮下脓肿

D.肛裂

E.肛瘘

锅炉烟灰的清洗方法中水洗法使用最广泛。