土颗粒组成特征应以土的级配指标的（）和曲率系数表示。
A.不均匀系数
B.土颗粒分布形状
C.土的含水率
D.土的天然稠度
参考答案：A
用所给词的适当形式填空。
1. Would you mind not _____(speak) so loud? I'm doing my homework.
2. Don't _____(drop) litter in the street.
3. Could you please _____(pick) up the book for me?
4. The teacher ordered us _____(listen) to her carefully.
5. We have no problem _____(finish) the work on time.
孕足月时正常羊水量为（ ）
A．200 ml
B．>2 000 ml
C．1 000 ml
D．500 ml
E．<300 ml
