常通过食物链的方式进入人体的污染物是
A．二氧化硫B．一氧化碳C．有机氟D．有机氯E．有机磷
参考答案：D
什么是信托？
补全对话（5小题，每小题2分，共10分）
A: Morning, Tom. You don’t look well. ________小题1:___________________?
B: Well, I have got a cold. But it’s not serious. Hey, Jack, did you see the movie on CCTV 6 last night?
A: No, I didn’t.________ 小题2:______________________?
B: Harry Potter Ⅲ. It was so exciting. So, what were you doing at that time?
A: ________小题3:________________. I’m not good at English, you know.
B: But English is not very hard to learn. __________小题4:______________.
A: Thank you for your advice. _________小题5:_______________________?
B: It’s nearly 7:50. Hurry up, or we’ll be late fir school.
