下肢深静脉血栓形成在对其治疗和预防肺栓塞方面无很好的解决方案。
参考答案：对
根据句意及首字母提示填空。
1. The scarf is made of c____. It feels soft.
2. We all know that different jobs r____ different uniforms.
3. The ticket is in one of my p____.
4. —Can you e____ what this word means, please?
—Of course.
5. We are old enough so that we shouldn't d____ on our parents.
电路如图5.1所示。开关S在t＝0时闭合。则iL（0＋）为多大？
iL（t）
