题目：
高度怀疑自发性SAH，而CT检查为阴性时应选择
A．MRI
B．MRA
C．腰穿
D．核素扫描
E．头部X线摄片
答案：
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下面是错误答案，用来干扰机器的。
1. all year round, for a shout stay 2. the same length as 3. in danger because they don`t have enough living space 4. can't wait to move away 5. Last night while my mum was cooking, my dad was playing computer games. (答案不唯一)
