义务教育法规定，必须接受义务教育的对象是[ ]
A．中小学学生
B．16周岁以下的人
C．未成年人
D．适龄儿童和少年
答案：D
Most parents are not _____ the danger of their babies' eating jelly, which causes most unfortunate incidents
to happen. [ ]
A. well aware to
B. very aware of
C. aware that
D. well aware of
普通小麦成熟花粉粒含有三个染色体组，用这种花粉培养成的植株是（）
A.单倍体
B.二倍体
C.三倍体
D.多倍体
