The new game called Sphairistike appeared in （）in 1873.

单项选择题Lawn tennis was introduced to the United States in （）

A．1873
B．1874
C．1876
D．None of the above

单项选择题How did Binet decide which task to include on his first test（）

A．He first worked out thirty tasks for mentally deficient children.
B．He first gave all the tasks to many children both younger and older.
C．He first gave the tasks to many children he thought appropriate.
D．He first gave some of the tasks to different groups of children.