理财投资要考虑 [ ]
①投资的收益与风险 ②抗风险因素 ③自身经济实力 ④投资合法性
A、①②④
B、①③④
C、①②③
D、①②③④
答案：D
The traffic problems we are looking forward to ______ solved should have attracted the government’s attention.
A．see
B．seen
C．be seen
D．seeing
若4a-9与3a-5互为相反数, 则a2 - 2a + 1的值为________
