第17题:[单选题]All the following sentences areconditional sentence except ___________. A.Given another chance, I' 11 make full useof it. B.He will succeed if he only does his best. C.So sudden was the attack that we had notime to escape. D.Should you need my help again, just giveme a ring. 参考答案:C 考查条件句。条件句可分为真实条件句和非真实条件句。A项和B项为真实条件句,D项 为省略if的虚拟条件句,而C项是so…that引导的结果状语从句。题干要求选择不是条件句的一项,故C为正确答案。