在四种化合物①NaHCO3、②Al(OH)3、③Al2O3、④H2N-CH2-C

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问题选择题

在四种化合物①NaHCO₃、②Al(OH)₃、③Al₂O₃、④H₂N-CH₂-COOH中，跟盐酸和氢氧化钠溶液都能反应的是[ ]

A．只有② ④

B．只有①②

C．只有①②③

D．①②③④

答案

答案：D

选择题

–Would you like _________? –Thanks, I am full.

A．something to eat

B．somethings to eat

C．eating something

D．something to drink

选择题

-----It rained nonstop yesterday . -----Yes .We __ a worse day for the picnic .

A．shouldn’t have picked

B．couldn’t have picked

C．couldn’t pick

D．Wouldn’t pick