皮皮学，免费搜题
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【单选题】
牙髓治疗术要求的无菌操作如下，除外A.
隔离唾液
B.
去净腐质
C.
消毒器械
D.
手的消毒
E.
皮肤消毒
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皮皮学刷刷变学霸
举一反三
【单选题】赋值语句 a = 123 + Mid ( "123456" , 3 , 2 )执行后,变量 a 的值是 ________ 。
A.
"12334"
B.
123
C.
12334
D.
157
【单选题】—No dessert for me, please. I’m on ____ diet. —Why not just take one bite of ____cheese cake? I’m sure you will love it.
A.
a; a
B.
/; the
C.
a; the
D.
/; a
【单选题】— I wonder if I could possibly use your car for tonight. — ________.I'm not using it anyhow. [ ]
A.
Sure, go ahead
B.
I don't know
C.
Yes, indeed
D.
I don't care
【单选题】—I’d like to invite you to my new house next weekend. —Thank you, but ____ I’ll have time I’m not sure at the moment.
A.
when
B.
as
C.
in case
D.
unless
【单选题】—I’m so anxious about my driving test tomorrow. Would you please give me some advice? —_____. I’m sure you are good enough to pass it. Be confident of yourself.
A.
Absolutely
B.
Take it easy
C.
You are right
D.
Not really
【单选题】—My recorder is broken. Could I use yours? —_______, but you have to return it tomorrow.
A.
I’m not sure
B.
No problem
C.
I’m sorry
D.
I hope so
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