题目：23． We-d better read in the morning because________ ．
A．it is difficult to get good results
B． the air is fresh and our minds are clear
C．it is easy to remember what we have learned
D． both B and C
喵查答案：D
23．D【解析】最好在早晨读书的原因在第二段第二、三两句，故B、c坶符合题意，因此选D。
