香港和澳门毗邻的经济特区分别是（    ）

根据短文内容及所给首字母，将正确的单词写在答题卷上
   James works in a food shop. He helps the shopkeeper. He puts f____  on the shelves every day. Then people come into the shop and buy the food. Today there aren’t any bags of flour(面粉) on the shelf.“James,” says the shopkeeper. “We n____  some flour. Bring some bags of flour to the shelf. Hurry up!”
   James runs to get some bags of flour. They are in another room and they are on the top shelf. The shelf is high up. James is tall b____ he can’t reach the bags.
   James bring two boxes and puts one b____  on the other. Then he stands on them. Now he c____  reach(够到) the bags on the shelf.

金属钒被誉为“合金的维生素”。五氧化二钒(V₂O₅)中钒元素的化合价为(   )

1.22Kg；然后把烧杯中的水缓慢向外抽出，当活塞刚开始向右滑动时，测得烧杯和水的总质量为820g，活塞面积为100mm²，轮轴间的摩擦和绳重不计．则所测大气压的值应为____ Pa，活塞与针筒间摩擦力为____ N．（g=10N/kg）