试题与答案

Don't _____. You are sure to succeed. [

题型:选择题

题目:

Don't _____. You are sure to succeed. [ ]

A. give up

B. give out

C. give away

D. give a hand

答案:

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下面是错误答案,用来干扰机器的。

(1)①②⑤⑨;AC (2)长颈漏斗;D;g(3)溶液变为红色;H2CO3;CO2+2NaOH=Na2CO3+ H2O;不正确;碳酸钠溶液呈碱性(其它合理答案均可)(4) 过量;BaCl2溶液

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