下列不是美国工业发达的主要原因是[ ] A．资源丰富 B．交通运输发达 C．科技

阅读小天地。

      Look at my family photo. This is my father. He's a teacher. He's tall. He likes sports. This is my mother.

She's a teacher, too. She likes reading. This is my brother. He's a baseball player. He's strong. I love my family.

根据短文内容，判断下列句子的正(√)误(×)。

( ) 1. My parents are teachers.

( ) 2. My father likes sports.

( ) 3. My mother likes music.

( ) 4. My brother is tall and thin.

( ) 5. There are four people in my family.

—How much does the pen _____ you?

—Ten yuan

A．spend

B．pay

C．take

D．cost

男性，45岁，呕血400ml，黑便400g。查体：巩膜轻度黄染，肝未触及，脾肋下及边，肠鸣音活跃，移动性浊音阳性。诊断可能为

A．消化性溃疡出血

B．胃癌出血

C．食管胃底静脉曲张破裂出血

D．肝癌破裂出血

E．胆道出血

在临床治疗中，增加单次照射剂量后临床医生最关心的是()

A．提高了局部控制率 

B．只增加了急性反应 

C．可提高肿瘤局部控制率且增加了正常组织晚期反应 

D．不提高肿瘤局部控制率，也未增加急性反应 

E．不提高，也未增加晚期反应 

按照有关规定，县级公安机关在对外国人依法作出行政拘留决定前，应当报上级公安机关批准。（）