问题
单项选择题 B型题
T波的顶峰前30ms内（）。
A.有效不应期
B.相对不应期
C.超常期
D.心室易损期
E.反应期
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
T波的顶峰前30ms内（）。
A.有效不应期
B.相对不应期
C.超常期
D.心室易损期
E.反应期
参考答案：D
| 阅读理解。 | ||||
| Write down your wish on the Wish Tree. And tell the tree what you'll do for others if your wish comes true. Who knows? The tree may do magic for you.
| ||||
| 1. What can we learn about the Wish Tree? | ||||
| A. It tells people's future. B. It collects people's name cards. C. It helps people to think of others. D. It grows bigger when a wish comes true. | ||||
| 2. Which is most likely true? | ||||
| A. Nina is a movie star. B. Grace works in the hospital. C. Willy will teach people how to make a movie. D. Hank would like to keep children safe on the road. | ||||
| 3. Who does NOT write about his or her family? | ||||
| A. Grace. B. Hank. C. Willy. D. Nina. |