Mr Green is an Englishman. He teaches English well His English classes are very interesting. He likes us and we like him, too.
Mr Green has two children----Mike and Nancy. Mike is eight and his sister Nancy is five. Mike goes to school but Nancy doesn't. Mr Green likes to wear a T-shirt and a pair of jeans. Football is his favorite sport. After school we often have a basketball match. Sometimes Mr Green watches and joins us. He plays basketball just for us.

下列有关气候对土壤形成的影响说法正确的是

下列能够引起商品房需求曲线出现如图中变化的因素可能是（    ）

①商品房价格较快上涨

②政府出台更为严格的限购政策

③房贷首付比例降低

④公积金贷款利率提高