有一名蛛网膜下腔出血病人，哪项检查对其无帮助（）。
A.头颅CT
B.ECT
C.MRI
D.核磁血管成像
E.全脑血管造影
参考答案：B
阅读对话，回答下列问题。
Jim: Hello, Helen.
Helen: Hi! How are you this morning?
Jim: Not bad (不错), thanks. And you?
Helen: I'm fine, thank you. Look, it's a nice day!
Jim: Oh, yes. But what's the time?
Helen: It's 8: 00.
Jim: It's time to go to school.
Helen: OK. Let's go.
1. Is it a nice day?
___________________________________
2. Who's the girl?
3. Is she fine this morning?
4. What's the time?
5. Is it time to go home?
套期保值与期现套利的相同之处在于两者的目的都是为了规避现货风险。( )
