你会翻译吗？选择正确的译文。

1. 随便吃。[ ]

A. Can I help you?

B. Help you.

C. Help yourself.

2. 我会用筷子。[ ]

A. I can wash chopsticks.

B. I can use chopsticks.

C. I can cut chopsticks.

3. 让我试一试。[ ]

A. Let me try.

B. Let you try.

C. Let me show.

4. 晚安。 [ ]

A. Good morning.

B. Good night.

C. Goodbye.

男，50岁。下颌可摘局部义齿修复后初戴3天，摘戴义齿时疼痛明显，咀嚼食物有痛感，口内检查：活动义齿修复，基牙稳固，义齿固位性及稳定性好，咬合接触良好，右下颌舌骨嵴隆突处黏膜有溃疡点。造成摘戴义齿疼痛的原因是（）

A.咬合压力过大

B.卡环固位过紧

C.基托进入软组织倒凹内

D.基托与黏膜贴合过紧

E.摘戴义齿用力过大