【单选题】Mr.Smith was born ____and died_____
A.
in the 1985s;in his eighties
B.
in 1985's;in his eighty
C.
in the 1985's;in his eighty
D.
in the 1985's;in his eighties
【单选题】[单选题]多数食物中毒以( )为主要特征。
【简答题】听录音,判断下列图片正(√)误(×)。 ( ) ( ) ( ) ( ) ( )
【单选题】F- 电极膜电位的产生是由于
A.
膜两边溶液中,F-与LaF3晶体进行交换的结果
【判断题】Fred W. Smith was born into a poor family and started his business from scratch.
【判断题】As the founder of FedEx, Fred Smith was born in a well-off family andhada happy childhood.