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“验证力的平行四边形定则”的实验情况如图所示，有关此实验，下列叙述正确的是A．两弹簧测力计的拉力可以同时比橡皮筋的拉力大B．橡皮筋的拉力是合力，两弹簧测力计的拉力是分力C．两次拉橡皮筋时，需将橡皮筋结点拉到同一位置O.这样做的目的是保证两次弹簧测力计拉力的效果相同D．若只增大某一只弹簧测力计的拉力大小而要保证橡皮筋结点位置不变，只需调整另一只弹簧测力计拉力的大小即可 The hottest“green”toy in Germany isn't made of organic or recycled materials.This one has a solar panel and only runs if kids remember to insert bright red “energy stones”that power the space station.Germany，a pioneer in many renewable energy initiatives，is also at the forefront of creating environmentfriendly toys aimed at making kids think about where energy comes from and how much of it they can use，raising awareness through play.A number of hightech green toys are on display at this year's Nuremberg toy fair，which runs through Sunday.Among them，there are hydroelectricpowered(水电动力的)toy cars，and doll houses with wind turbines and rainwater catchers.The bright green “Future Planet”space station features an inner atrium(中庭)with a fan that is powered by a functioning solar cell.Its aim is to get kids to use their imagination about how energy will be created in the future.Makers and retailers believe such toys will play an increasingly important role in their future—and that of our kids.“Energy is the question of the future and we are definitely thinking about this as we move ahead，”said Judith Schweinitz，a spokeswoman for Playmobil，maker of the solar panelfitted space station.“It is increasingly being brought into our play concept.”Green toys—which range from those made of sustainable materials to ones like the space station that just raise environmental awareness—make up only a sliver of the $ 84 billion international toy market，but their share is growing，studies indicate.Environmental research firm Earthsense，based in Syracuse，New York，predicts that green toys will account for about $ 1 billion，or 5 percent of U．S.toy sales in the next five years.Parents are smart and they want information about what's in the product.That's what's really driving the market.【1】The hottest “green”toy in Germany is ________.A. made of rubbishB. made of organic or recycled materialsC. equipped with a solar panelD. driven by an advanced motor【2】The purpose of making the green toys is to ________.A. raise kids' awareness about energy and environmentB. improve kids' imaginationC. give kids the knowledge of technologyD. improve the safety of toys【3】We can infer from the last paragraph that the green toys ________.A. can help save little energyB. are not accepted by parentsC. will sell well in the futureD. have not been produced【4】Which of the following BEST describes the opinion of Earthsense about green toys?A. Doubtful. B. Optimistic.C. Disappointed. D. Proud.