句型转换。

l. There is a push-pin. It is holding up this piece of paper. (合并为一句)

   There is a push-pin_____ _____ this piece of paper.

2. He has a factory. It has a hundred machines. (合并为一句)

     He has a factory _____ a hundred machines.

3. How much is a push-pin today? (改为同义句)

    What's_____ _____ _____ a push-pin today? /How  much_____a  push-pin         _?

4. It was his big success.(改为同义句)

   He was very _____.

5. In 1900,a push-pin cost  $0.01. Today it costs  $0.05.(合并为一句)

   A push-pin is_____ _____today than in 1900.

下图为中国和美国的部分地区，阴影部分为玉米带，读图回答1—2题。

1、我国东北玉米带和美国玉米带所共同具备的有利自然条件是

①热量丰富，生长期长

②地广人稀

③夏季降水丰富，且灌溉水源充足

④地势平坦

⑤土壤肥沃[ ]

A．③④⑤

B．②③④

C．②④⑤

D．①④⑤

2、中美两国玉米带所共有的社会经济因素是

①劳动力充足 ②机械化程度高 ③市场广大 ④复种指数高 ⑤交通运输便利[ ]

A．①③⑤

B．②③⑤

C．②④⑤

D．①②⑤