题目

计算：﹣2×3=__________． 答案：﹣6． 【考点】有理数的乘法． 【分析】根据有理数乘法法则计算． 【解答】解：﹣2×3=﹣（2×3）=﹣6． 【点评】不为零的有理数相乘的法则：两数相乘，同号得正，异号得负，并把绝对值相乘．He had no idea of how the climb would be _______ he was half way up the mountain.A．whenB．untilC．whileD．as