多项选择题

下列哪些全球性的大气污染直接影响整个生物圈的机制和平衡？（）

A．酸雨
B．气候变异
C．臭氧层的破坏
D．热带雨林的减少
E．温室效应

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单项选择题

M: How would you like to go to the concert tonight?W: Not tonight. I’m really not in the mood. I have to go to bed early. I have an important meeting to attend tomorrow.Q: What does the woman want to do tonight?（）

A．Stay at home and review the lesson.
B．Stay at home and have a good rest.
C．Go somewhere else.
D．Go to the concert tomorrow.

单项选择题

M: The dish is delicious. I never knew that you are so good at cooking.W: Thanks. But the credit should go to Mary. She prepared everything. If it weren’t for her, I’d never cook. Oh, please have some more.Q: What can you infer from the conversation?（）

A．The woman is an excellent cook.
B．The woman is a housewife.
C．Mary helped a lot in cooking the dish.
D．The woman has never cooked before.

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