为行明确诊断首选检查
A．脑血管造影
B．头颅核磁
C．脑室造影
D．ECT
E．头颅线平片
参考答案：A
Read and choose. (根据上下文，选择句子，补充完整对话)
A. What are you going to do?
B. I feel very happy.
Amy: Hello. How are you today?
Bill: I'm very happy.
Amy: 1________
Bill: We are going to have a football match.
Amy: How do you feel when the ball into the goal？
Bill: 2________
石料洛杉矶磨耗试验，要求加入的钢球总质量为( )。
A．5000g±50g
B．5000g±10g
C．5500g±50g
D．5500g±5g
