将0.345保留两个有效数字的近似数是______．
将0.345保留两个有效数字的近似数是：
0.345≈0.35，
故答案为：0.35．
根据汉语提示，完成下列句子（每空一词）。
1. It’s reported that over 1,000 people in the US have _______ _______ (死于) the H1N1 flu virus.
2. He didn’t catch the bus and _______ _______ _______ (结果), he was late for
school.
3. _______ _______ _______ (换句话说), none of us can go to the movie.
4. He has _______ _______ (查看) a lot of information about smoking.
5. When we breathe in others’ smoke, we can get diseases _______ _______ (也).
下述对于妊娠合并风湿性心脏病妇女的护理措施，有利于预防产时心衰发生的是( )。
A．宫缩时鼓励孕妇活动以减轻疼痛 B．如有中重度贫血应给予输血治疗C．鼓励产妇多进食，以增加体力 D．第二产程时，指导产妇用力屏气E．第二产程结束后用砂袋置于腹部
