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【简答题】
以下关于字符串处理正确的是哪一项？ A. +号可以用来拼接两个字符串，对于以下代码的输出字符串是Python >>> prefix = "Py" >>> prefix + 'thon' B. 字符串是自带索引的，对变量word = " Python " ，word[1]是字符y，但是word[-1]会报越界错误。 C. 字符串的索引有两个边界，前边界和后边界都是包括的。 D. 对于字符串 " apple " ， 3 * " apple " 的结果为 " 3apple " 。
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【单选题】Now, go upstairs _________ and clean your room!
A.
at once
B.
for once
C.
to once
D.
hurry up
【简答题】阅读理解 Mr.Jenkins liked all kinds of delicious food. As an important officer, he was often asked to dinner. The shopkeepers tried their best to fawn on(巴结)him. They knew it was good for their business. ...
【简答题】麻醉中的手术病人发生溶血性反应最早征象A. 伤口渗血和低血压 ,B=K.$ B．腰背酸痛 eTp`-r* C．胸闷、呼吸困难 l+F‑I>k!6 D．寒战、高热 P?xo‑p/ E．面部潮红、出现荨麻疹 $PX!hU@cK ，，，，bo.ry;3c
【简答题】There are quite a few words describing actions or movements. Fill in the blanks with the words in the box with the help of the definitions provided. Be sure to use the correct form of them. twitch wri...
【简答题】给下列图片选择相应的句子。 ( ) 1. A. Close your mouth. ( ) 2. B. Open your mouth. ( ) 3. C. Touch your nose. ( ) 4. D. Touch your ear.
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