肺癌病人术后完全清醒时，可由平卧位逐渐改为（）位。
参考答案：半卧
一个数的最高位是亿位，它是一个九位数．______．（判断对错）
_______ difficulty we meet with, we must finish it on time, because the opportunity is_______ valuable．[ ]
A. Whatever; such
B. However; such
C. However; so
D. Whatever, that
