什么是色素沉着?
今度の試験は、思った()難しい。 ["もの","より","まま","こと"]
The abbreviation TDC means (). ["top dead center","temperature difference center","time delay dock","top diesel company"]
银行受理客户申请数字证书业务时,每次最多可受理()银行卡。 ["5张","6张","10张","无限制"]
The master of any vessel entering Singapore may () radio pratique to the Port Health Officer through his local agent. ["apply to","apply for","apply with","apply i"]
一个移动用户要想与另一个移动/固定用户进行通信,必须经过()和()两种传输过程。