莱姆病特异性IgM抗体在游走性红斑发生后__出现__达高峰，多于__后降至正常水平。
题型：填空题
问题：
莱姆病特异性IgM抗体在游走性红斑发生后__出现__达高峰，多于__后降至正常水平。
题型：填空题
Look and judge. 看图判断下面句子是否正确，正确的写“T”，不正确的写“F”。
( ) 1. There is (有) a book on the desk
( ) 2. A cat is under the desk.
( ) 3. A pencil is on the desk.
( ) 4. A book and a ruler are on the desk.
( ) 5. A ruler is in the desk.