在单纯疱疹病毒亚临床感染患者中可检出相应抗体的占（）。
A.10%～20%
B.20%～30%
C.30%～40%
D.40%～50%
参考答案：D
看图填空。
Do you know what a snowman is? We make snowmen in China. First we make a big ball of 1__________ . Then we make another small 2__________. We put the smaller one on the top. Let's make 3__________ on the snowman. This 4__________ is his 5__________. I have some little
rocks for his 6__________ and 7__________. I have two 8__________ for his
9__________.
中国的封建君主专制在我国存在了大约
A 1000多年 B 近2000年 C 2000多年 D 近3000年
. Then we make another small 
2__________. We put the smaller one on the top. Let's make 
3__________ on the snowman. This 
4__________ is his 
5__________. I have some little 
6__________ and 
7__________. I have two 
8__________ for his