阅读理解

Everybody wants to be healthy. You know food is very important. There are lots of healthy food. You can have more bananas, apples, oranges, tomatoes and lettuce because fruit and vegetables are good for you. But don’t eat too much chocolate. It’s not healthy food. Healthy food can make you grow (生长) and make you strong（强壮的） and happy. Remember there is a saying—“An apple a day keeps the doctor away（远离）”. Sports can also keep you healthy. Get up early and do some sports every day. Don’t be lazy（懒惰的）. You will be healthy and happy.

读中国四大地理区域示意图，有关图中a、b两地区之间的分界线说法正确的是（　　）

已知F₁,F₂是双曲线的两个焦点，Q是双曲线上任一点（不是顶点），从某一焦点引$\angle F_{1}Q{F}_2$的平分线的垂线，垂足为P，则点P的轨迹是（  ）

①美国国内企业税负降低，出口产品竞争力增强

②会导致中国部分资本流向美国，加大人民币贬值压力

③诱使大量热钱流入中国，对中国股市发展带来利好

④人民币对美元升值，中国进口商品的数量会增加