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【判断题】
金属货币制发挥蓄水池功能的前提是要有足够大的币材金属贮藏。( )A.
正确
B.
错误
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举一反三
【单选题】— What happened to the heroes at the end of the book? — All of them _____ escape from the enemy's prison and began their new life. [ ]
A.
tried to
B.
managed to
C.
wanted to
D.
did their best
【单选题】下列说法不正确的是
A.
某溶液中滴入AgNO3溶液,产生白色沉淀,该溶液中一定含CI-。.
B.
某溶液与淀粉碘化钾溶液反应后显蓝色,证明溶液是氯水或溴水。
C.
将氟气通入氯化钠水溶液中,一定有氢氟酸和O2生成。
D.
实验证明氯水也能导电,但氯水不是电解质。
【简答题】What does the customer collect before he or she leaves?（ ） A．The bag C．The printed slip C．The metal basket D．The cash
【单选题】What will they do next?
A.
They'll fight with each other.
B.
They'll further negotiate the prices.
C.
They'll sign the contract.
D.
They'll exchange business cards.
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