Men are equally as good as women at taking care of others; better ________， male nurses can be a great help in keeping patients still while they receive painful treatment.

A．yet

B．much

C．enough

D．even

实验测得下列四种溶液的pH如下图所示：其中溶液呈碱性的是

A．稀硫酸

B．碳酸

C．碳酸钠溶液

D．氯化钠溶液