急性持续性腹痛，阵发性加剧并伴休克，最大可能是（）
A.输尿管结石肾绞痛
B.纹窄性肠梗阻
C.急性阑尾炎
D.溃疡病急性发作
E.急性胆囊炎
参考答案：B
Read and number. 读一读，排序标号。
( ) Then I go to school.
( ) At 12:00, I eat lunch.
( ) Then I go home.
( ) In the morning, I eat breakfast.
( ) I learn Chinese, English and math at school.
( ) At four thirty, I play badminton with my friend.
( ) In the evening, I eat supper with my family.
________是直接推动学生进行学习的一种内部动力，是激励和指引学生进行学习的一种需要。
