【简答题】下列观果植物是( ) A日本晚樱 B女贞 C珍珠梅 D石楠 E金银木
【单选题】现在完成进行时 1. 现在完成进行时的构成 肯定句:主语 + have/has + been + 现在分词 ... 否定句:主语 + have/has + not + been + 现在分词 ... 疑问句: Have/Has + 主语 + been + 现在分词 ...? 疑问代词 / 疑问副词 + have/has + 主语 + been + 现在分词 ...? I've been tryin...
【单选题】Choose the most appropriate answer in each situation. Situation 1 A foreign visitor expresses his gratitude to your boss by saying “Thank you so much for all you have done for me in the past few days....
A.
“It is our duty to help you.”
【单选题】下列叙述正确的是( ) ①久置于空气中的氢氧化钠溶液,加足量盐酸时有气体产生②若R的含氧酸的酸性大于Q的含氧酸的酸性,则非金属性R大于Q③SiO 2 和CO 2 都是酸性氧化物,都能与强碱溶液反应,但不能与任何酸反应④玻璃、水泥、水晶项链都是硅酸盐制品⑤液态氟化氢中存在氢键,所以其分子比氯化氢更稳定⑥氢氧化铁胶体与氯化铁溶液分别蒸干灼烧得相同的物质
【单选题】Look at the four stars (*) that indicate where the following sentence could be added to the passage.1* Fiat money is money because a government says it is. Paper currency and current U.S. coins are ex...
【单选题】上级的指令是员工的天职 ,这说明员工要( )上级指令。