I

Is this book mine?
   这本书是我的吗?

Is that a butterfly or a moth?
   那是蝴蝶还是飞蛾?

Is that your nag?
   那是你的马吗?

Is he coming this weekend or next weekend?
   他这个周末来还是下个周末来?

Is there anything interesting in the paper? Nothing much.
   报纸上有什么有趣的东西吗?没什么。

Is your younger sister of age yet?
   你妹妹成年了吗?

Is she still of the same mind?
   她仍持原来的意见吗?

Is the news official?
   这消息是官方发布的吗?

Is it accurate to predict the result on the basis of one secret vote?
   以一次不记名投票为基础预测结果准确吗?

Is your production on the decrease?
   你们的产量在减少吗?

Is this information on the level?
   这消息可靠吗?

Is she on the level?
   她为人诚实吗?

Is the store open from 9 to 7?
   那家商店是从上午九点营业到晚上七点吗?

Is there any cement over?
   有水泥多出来吗?

Is there a parking lot nearby?
   附近有停车场吗?

Is such a thing possible?
   这种事可能吗?

Is it practicable to try to develop agriculture in desert regions?
   试图在沙漠地区发展农业可行吗?

Is Harry's prehistoric car still working?
   哈里那辆老式汽车还能开吗?

Is rice the most productive food-bearing plant?
   稻子是不是产粮最多的植物?

Is the cup made of pure gold?
   这只杯子是纯金做的吗?