上海、武汉钢铁工业基地发展的共同有利条件是[ ]
A．靠近铁矿
B．靠近煤矿
C．靠近消费市场
D．濒临海洋，便于进口铁矿石
答案：C
世界地质公园泰山山顶海拔1532.7米，如果山脚某处（海拔32.7米）气温为25℃，那么山顶的气温大约是（ ）
A．9℃
B．16℃
C．34℃
D．17℃
He is a little bit mysterious these days. Nobody in our company knows exactly.
A．what he is working on
B．what is he working on
C．what did he work on
D．what was he working on
