正确答案: C

通济渠

题目：隋唐时期，淮水以北新增的有利于农田灌溉的水利工程是（ ）。

解析：C

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学习资料的答案和解析：

[单选题]One of the most important questions they had to consider was _____ of public health.

that D． which

[单选题]—Have you played baseball before?We need one more player.— I_______ like ball games, so I belives it will be fun to learn baseball.

Not really

[单选题]香蕉等芭蕉科植物只有地下茎，地上的茎状物为由叶鞘包叠而成的假鳞茎。( )

错误

解析：解析：“假鳞茎”改为“假茎”。

[单选题]由助细胞、反足细胞或极核发育成胚称( )。

无配子生殖