亚洲水旱灾害频发的地区是[ ]
A.东部和南部
B.东部和西部
C.中部和东部
D.南部和北部
答案:A
—What a nice garden!
—Yes. It _________ every day. [ ]
A. is cleaning
B. has cleaned
C. must clean
D. is cleaned
肺结核特点是()
A.长期咳嗽,咳大量脓痰,反复出现大咯血
B.45岁以上伴大量长期吸烟史,持续痰中带血
C.咳嗽剧烈时,痰中带血
D.低热、盗汗、咳鲜血痰
E.夜间阵发性呼吸困难伴咳粉红泡沫样痰