突然视力下降伴眼痛的眼病不包括
A．急性色素膜炎B．视网膜脱离C．急性闭角型青光眼D．角膜炎E．角膜水肿
参考答案：B
两地实际距离是4千米，画在图上是4厘米，这幅图的比例尺是______．
Last Sunday my father made a promise ______ he was free he would take me to the park.[ ]
A. if
B. that if
C. whether
D. that
