()是自然界中人类面临的最大威胁。
A、资源问题
B、人类本身
C、环境问题
D、种族问题
参考答案:B
根据首字母和句意补全单词。
1. Fill in each b___with a word in the list.
2. God c___the word.
3. I’d like to have a s___room.
4. He s___out his arm to take the book.
5. He has beautiful t___.
用于有机磷中毒的解毒剂是()
A.氟马西尼
B.亚甲蓝
C.维生素K1
D.阿托品
E.氯解磷定(氯磷定)