In the UK, a woman usually doesn't like to be asked ___________.
A：where she comes from
B： how much she weighs
C：whether she had been married
D：what is her age
判断下面句子的关联词使用是否正确。
不管天气很冷，广场上参加早锻炼的人总是很多。（ ）
I am good at playing basketball，and my brother is good at it．
某蔬菜公司收购到某种蔬菜140吨，准备加工上市销售．该公司的加工能力是：每天可以精加工6吨或粗加工16吨．现计划用15天完成加工任务，该公司应按排几天精加工，几天粗加工？设安排x天精加工，y天粗加工．为解决这个问题，所列方程组正确的是（ ）
