问题
选择题
Children under sixteen are not permitted to participate in such kind of activities _____ bad for their mental development.
A．as is
B．as are
C．that are
D．that they are
答案
答案：A
考察句型，根据such可知，后面可以使用such ……as+不完整句子 such ……that+完整句子，因此排除C,such kind of activities后面的谓语动词应当根据kind，所以排除BD，选择A