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【多选题】
下列哪三种说法正确描述了 OSPFv2 和 OSPFv3 的相似之处？（选择三项。）A.
它们是链路状态协议。
B.
当发出 OSPF 消息时，它们都使用全局地址作为源地址。
C.
他们共享多个区域的概念。
D.
它们都支持使用 IPsec 进行身份验证。
E.
它们使用相同的 DR/BDR 选择过程。
F.
默认情况下它们都启用单播路由。
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举一反三
【单选题】What does Dr. Ross Cartmill mean by “the ostrich approach”
A.
a casual attitude towards one’s health conditions
B.
a new therapy for certain psychological problems
C.
refusal to get medical treatment for fear of the pain involved
D.
unwillingness to find out about one’s disease because of fear
【单选题】Then there’s the ostrich approach . “Some men are scared of what might be there and would rather not know,” says Dr. Ross Cartmill. What does Dr. Ross Carmill mean by “the ostrich approach”?
A.
A casual attitude towards one’s health conditions.
B.
A new therapy for certain psychological problem.
C.
Refusal to get medical treatment for fear of the pain involved.
D.
Unwillingness to find out about one’s disease because of fear.
【单选题】Now Dr. Ross is bringing a welcomed medical revolution to the world_________ so many people need it.
A.
that
B.
where
C.
how
D.
which
【单选题】What does Dr. Ross Cartmill mean by 'the ostrich approach' (Line 1, Paragraph 9 )?
A.
A casual attitude towards one's health conditions.
B.
A new therapy for certain psychological problems.
C.
Refusal to get medical treatment for fear of the pain involved.
D.
Unwillingness to find out about one's disease because of fear.
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