张家界是世界上最典型的石英砂岩峰林峡谷地貌。（ ）
参考答案：对
-–It’s almost eight, but Tom hasn’t turned up. He may not be here.
-–He will. He never _____on his words.
A．goes back
B．comes back
C．gives back
D．gets back
统计资料整理的汇总形式有（）。
A、逐级汇总
B、超级汇总
C、综合汇总
D、会审汇总
