The author thinks the negotiations will fail at last mainly because______.
A. Iran is trying to develop its domestic economy through its energy program
B. there are absolutely no sincerities between Iran and European countries during the negotiation
C. European countries cannot bring security benefits as Iran's nuclear program does
D. the negotiators decide to take some economic or political sanctions toward Iran
He has______ strange hobbies like collecting bottle tops and inventing secret codes.
A. gone on
B. gone in for
C. gone with
D. gone through with
In my opinion, a friendship may be______ , casual, situational or deep and lasting.
A. identical
B. original
C. superficial
D. critical
对呼吸功能障碍者的术前准备，下列哪项是不妥当的
A. 停止吸烟2周，鼓励患者多练习深呼吸和咳嗽
B. 应用支气管扩张剂及雾化吸入等
C. 对经常发作哮喘者给予地塞米松以减轻支气管粘膜水肿
D. 对合并感染者，在应用抗生素的同时施行手术
E. 麻醉前给药量要少，以免呼吸抑制和咳痰困难
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