填空

1. —What's your n_______?

    —My name is Bob.

2. Five plus three is e________.

3. John Brown's f________ name is Brown.

4. His phone n________ is 562-4328.

5. —Who is that girl?

    —H________ name is Linda.

COPD患者发生肺动脉高压最重要的机制是（）

A.肺阻力血管内膜增厚，管腔狭窄

B.血容量扩张

C.红细胞增加致血液黏滞度增加

D.肺小动脉内广泛血栓形成

E.缺氧、C0₂潴留所致肺小动脉收缩