药物剂量过大时，发生的对机体的损害性反应 A．变态反应 B．特异质反应 C．副作用

患者女性，49岁，近3个月出现心悸、气短，伴双下肢水肿，不能平卧，体格检查心浊音界向两侧扩大，可随体位改变而变化，心尖冲动不清楚，听诊心脏无杂音，心音遥远。首先考虑的诊断是（）
患者男性，35岁，近6个月出现心悸、胸痛、劳力性呼吸困难，伴发作性眩晕，体格检查心脏轻度增大，胸骨左缘闻及粗糙的喷射性收缩期杂音，心尖部闻及收缩期杂音、第四心音，下蹲位杂音减轻。诊断应考虑（）

A.缺血性心肌病

B.心包积液

C.扩张型心肌病

D.肥厚型梗阻性心肌病

E.风湿性心瓣膜病

葡萄胎一经确诊，应迅速____________，因为葡萄胎有______可能，所以葡萄胎排出后应定期随访持续________。

What is "Walk to School"
Now we are working on a programme of "Walk to School". We would like as many parents and children as possible to take part, even if in a small way. Children who walk to and from school along with their parents can learn essential road safety and life skills.
You can take part by...
■ Walking to and from school with your child every day.
■ Walking for one or two days during the week.
■ Encouraging others to walk, if you already do.
Walking is great!
■ Walking is great exercise! A walk is good for your body and can keep you fit.
■ You won’t have to waste time looking for a parking site.
■ It’s free. You’ll save money by not using the car.
■ It’s pollution-free.
■ It’s a good chance to talk to your children and to meet other parents, too.
Enjoying walking to school!
Here are some suggestions to help you and yore" child enjoy walking to school.
■ Plan a safe route together.
■ Teach children what a kerb is and what it means.
■ Encourage your child to help you choose the safest places to cross the road.
■ Look at and discuss the things you see on your way—especially road signs and what they mean.
Walk to school! Thousands of parents and children already take part, could you
Please go to www. walktoschool, org. uk for more information.

According to the writer, you can learn more about "Walk to School" by ______.

A. reading a newspaper
B. making a phone call
C. going to the Internet
D. having a traffic lesson

黄酮定量分析可选用（）

A.四氢硼钠

B.盐酸镁粉

C.三氯化铝

D.锆盐-枸橼酸试液

E.三氯化铁

活性酸