Where in the passage does the author suggest a possible reason for Whitney's lifelong commitment to art
A. The first paragraph.
B. The second paragraph.
C. The third paragraph.
D. The fifth paragraph.
Para. 1 focuses on ______.
A. the importance of selecting the staff
B. the uncertainty of making a language camp successful
C. choosing suitable participants
D. establishing the required qualities in the teachers
关于上市公司历次募集资金的运用，发行人应披露最近( )年内募集资金运用的基本情况。
A. 3
B. 5
C. 10
D. 15
关于胎儿成熟的判断，正确的是
A. 超声测胎儿头双顶径=7.5cm，提示胎儿成熟
B. 羊水肌苷测定＝88.4μmol／L，提示胎儿肾成熟
C. 羊水胆红素>0.02μmol／L，提示胎儿肝脏成熟
D. 羊水脂肪细胞出现率<10％，提示胎儿皮肤成熟
E. 羊水卵磷脂与鞘磷脂比值≥2，提示胎儿肺成熟
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