进行精液常规检查时,最好提前禁欲几天()
A.2天
B.3天
C.5~7天
D.7~10天
E.时间越长越好
参考答案:C
根据句子的意思以及括号中的音标提示写出单词。
1. People in the USA usually have a ________ party at Halloween.
2. My mother ________ glasses every day.
3. Are you ________ tomorrow?
4. She is the ________ runner in our class.
5. I ________ to be a teacher when I grow up.
关于头围的描述,正确的是()
A.出生头围平均32cm,前半年增长6~8cm,后半年增长1~2cm
B.出生头围平均34cm,前半年增长8~10cm,1岁时46cm
C.2岁时头围44cm,5岁时46cm,15岁接近于成人54cm
D.出生时头围30cm,每年增长10~14cm,2岁时48cm
E.2岁时头围44cm,15岁时接近于成人50cm