用手柄重力放起落架时需转动几圈摇把（）
A、顺时针转十圈
B、顺时针转五圈
C、顺时针转三圈
D、以上都不对
参考答案：C
按要求写句子。
1. He wants to see a thriller.(变为否定句)
He _____ _____ to see a thriller.
2. She likes thrillers. (对画线部分提问)
_____ _____ _____ _____ _____ she_____ ?
3. I think they are boring. (改为一般疑问句)
_____ _____ _____ they are boring?
4. with, Tom, I, go, movies, often, to(.)(连词成句)
_______________________.
5. She also likes Beijing Opera.(改为同义句)
She _____ Beijing Opera, _____.
2011年重庆市公租房开工建设量全国第一，达到1425万平方米，用科学记数法表示为（ ）平方米．
A．1425×104
B．1.425×108
C．14.25×106
D．1.425×107
