题目

根据句意，用所给词的适当形式填空。 1.There are lots of           (shine) stars in the sky. 2. The tower has stood on top of the hill for five _____________ (century). 3.The little boy is ______(kind) to his classmates, so nobody likes him. 4. What do you think about the air __________(pollute) in your hometown? 5. Danny and Daniel are brothers, and their_____(wife) are sisters. That’s interesting. 6. —What is your          (feel) about the program? —It’s very interesting. 7.The          (develop) of this area has made our life more c向稀硫酸和硫酸铜混合液中加入足量的铁粉，完全反应后剩余固体物质的质量与所加铁粉的质量相待．求原混合液中硫酸和硫酸铜的质量比．