稀硫酸溶液的正确制备方法是()
A.在搅拌下,加水于浓硫酸中
B.在搅拌下,加浓硫酸于水中
C.水加于浓硫酸,或浓硫酸加于水都无所谓
D.水与浓硫酸两者一起倒入容器混合
参考答案:B
—Did you notice John was not at work today?
—No.If _______ working,I would have noticed it.
A.I’d
B.I was
C.I’d been
D.I were
为考生文件夹下BHEWL文件夹中的MNEWS.EXE文件建立名为RNEW的快捷方式,存放在考生文件夹下。