台湾自古以来就是中国的神圣领土，下列叙述正确的是（　　）

某杆状细菌的长、宽分别约为2微米和1微米（1微米=10^﹣4厘米）．如果一只手上有1千个该杆状细菌，它们连成一线，那么这些连成一线的细菌最长是多少厘米？（结果用科学记数法表示）

⑴Who can help me?   ____                     A、Because it's going to be sunny.

⑵Why are you wearing a hat?____         B、I'm cleaning my room.

⑶When was your brother born?____     C、I want a hamburger, please.

⑷What are you doing?  ____                  D、In 2001.

⑸What do you want to eat?____            E、Sorry, I can't.

少年陈某沉湎网络游戏不能自拔，深感愧对父母，离家出走。事例表明（）