材料受力时抵抗弹性变形的能力称为()。
A.强度
B.韧性
C.刚度
D.挠度
参考答案:C
We will fly a kite as soon as your homework ______.
A.finishes
B.will be finished
C.has finished
D.is finished
抗菌药物是治疗流行性感冒的首选药物。