“深处种菱浅种稻，不深不浅种荷花”是清代阮元《吴兴杂诗》中的名句。这一名句给我们的哲学启示是 [ ]

A．要重视量的积累

B．要学会从整体上把握事物的联系

C．要善于分析事物的因果联系

D．要学会具体问题具体分析

Double ovens are a good idea, especially ________ you are cooking several meals at a time.

A．though

B．if

C．that

D．unless