随着时间周期的延长，房地产市场的价格弹性逐渐增大。 ( )
参考答案：错
患者，女性，48岁。既往有风心病史，心率128次／分，心音强弱不等，律绝对不齐，服用地高辛10天后，心率变为38次／分。首先考虑的诊断是（）
A.室性心动过速
B.房颤伴三度房室传导阻滞
C.房颤伴二度Ⅰ型房室传导阻滞
D.心房扑动
E.房内传导阻滞
Which of the following statements about hypothesis testing is FALSE（）
A. The null hypothesis is a statement about the value of a population parameter.
B. A Type Ⅱ error is failing to reject a false null hypothesis.
C. If the alternative hypothesis is Ha: μ＞μ0, a two - tailed test is appropriate.
