以下原子结构示意图中，属于某种离子的是（ ）
A：
B：
C：
D：
指出下面句子表达的语气
请致电上海领事而救先生焉
吾已无事可办，惟待死期耳
呜呼烈矣！
句子配对。
①How heavy is Tom?____ A. There are 15.
②How old is he?____B. He is 15years old.
③How much is the robot?____C. He weighs 51kg.
④How many boys are there under the tree?____D. It's September 15th.
⑤When is your birthday?____E. It's ¥15.
