DNA双螺旋结构模型是______于______年提出的。
参考答案:Watson和Crick;1953
根据句意和首字母提示。完成单词。
1. The magazine can't i _____ her. She doesn't like it at all.
2. Mother often tells me to be h _____ so I never tell lies.
3. She has a kind h _____ and she is always ready to help others.
4. There are many different c _____ of animals.
5. People like apples because they t _____ good.
患者,男,27岁,因脐周疼痛伴恶心8小时入院,1小时前疼痛转移至右下腹。查体:右下腹麦氏点压痛、反跳痛明显。血常规提示白细胞明显增多,腹部X线片未见异常,临床考虑急性阑尾炎。
患者最初脐周疼痛其发生机制属于()。
A.内脏性疼痛
B.躯体性疼痛
C.牵涉痛
D.既有躯体性疼痛又有内脏性疼痛
E.既有躯体性疼痛又有牵涉痛