问题
选择题
10.Yao Ming put his effort _____ basketball training _____ a very young age.
A．to, in
B．to, at
C．into, in
D．into, at
答案
答案：D
题目分析：句意：姚明在很小的时候就将精力放在篮球训练上。Put one’s effort into sth意为“将某人的精力放在某事上”；at a young age意为“在很年轻的时候”；故选D。