线材轧后在高温下迅速穿水冷却，具有细化（），减少氧化铁皮、改善拉拔性能等优点。
A.晶粒
B.晶体
C.晶格
D.组织
参考答案：A
根据句意，在横线上，写出括号内所给单词的适当形式。
1. You can make a __________ (choose) among those programmes.
2. The little girl came here by train all by __________ (she).
3. The lady looks much younger in this __________ (fashion) dress.
4. Of the winters in recent years, last winter was the __________ (dry) one.
5. The doctors in the hospital are trying a new __________ (treat) for cancer.
糖尿病自主神经病变与多种心血管事件关系密切，哪些情况属于此（）
A.体位性低血压
B.心肌梗死
C.无症状心肌缺血
D.静息性心动过速
E.运动耐量下降
