_________ to education , she spent much time communicating with the students and their parents.
| A．Devoted | B．Devoting | C．Having devoted | D．Devote |
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1.The advance in technology has added many new _______(功能) to the cell phone.
2. The _____( 气候) in Chongqing is always mild.
3.I have _______(解释) the cause many times to the audience to keep a positive image.
4. It is ____(不必要) to ask him to change his mind.
5. This material ______(传导) electricity.
6. We can draw the ______(结论) that the two chemicals do not react.
7.I have never______(后悔) my decision to come back to my motherland.
8._____(环境的)protection should be put at the top of the list for each country.
9. Special puzzles have been designed to test the ________(智力)of the children.
10.She went abroad for further study with the __________(目的) of finding a good job.
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Fly the kite when a ___1._____ appears to be coming on .Stand inside a door or under some __2.____, so that the silk ribbon does not get wet. Take care that the string doesn’t touch the wall or the door. When a thundercloud comes over the kite, the_3.__ piece of metal will pull the electricity from the cloud. The kite and the string will become __4.____. When the kite and the string are wet from the rain, they will conduct the electricity very well. You can _5.___ and store the electricity in the condenser and use it for other experiments
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