一般智力优异或高智商并在学习能力上特别优秀的儿童指的是（）。
参考答案：学业性超常儿童
He insisted that he _____ the best, so he insisted that he _____ the work all by himself. [ ]
A. was; do
B. be; do
C. be; did
D. had been; had done
你能说出长距离跑的呼吸方法吗？
