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问题 单项选择题

符合血栓性外痔临床表现的是（）。

A.直肠脱垂显示有环状沟纹

B.常合并会阴下降、直肠前突和耻骨直肠肌痉挛

C.肛裂后正中的哨兵痔常表示有肛瘘存在

D.在肛门边缘出现淡蓝色、张力大的触痛肿块

E.肛门内缘的皮肤皱褶有炎性水肿

答案

参考答案：D

解析：血栓性外痔见于肛门周围，为一突出暗紫色长圆形肿物，表面皮肤水肿，质硬，压之很痛，不能活动。

选择题
下列词语中加粗字注音完全正确的一项是
[ ]
A．禁锢（gù）玷（diàn）污不屑（xuè）
B．忏（chàn）悔避讳（huì）幻（huàn）想
C．造诣（yì）婆娑（suō）憎恶（è）
D．嗜好（hào）惬（xiè）意赫（hè）然
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单项选择题

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (6) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (7) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (8) .

As administrators seek to block dangerous email attachments through the recognition of well-known (9) , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (10) access to your network.

9（）

A.names

B.cookies

C.software

D.extensions
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