【单选题】大约 18 万年前,最早离开非洲的原始人到达( )
【判断题】第五章 邓小平理论只强调物质文明和精神文明两手抓,两手都要硬,除此之外,并无其他的“两手抓”思想。( )
【判断题】Preferred stock is referred to as a hybrid security because it has many characteristics of both common stock and bonds.
【简答题】阅读理解。 News 1 Yuan Longping,the father of hybrid rice (杂交水稻), won the World Food Prize on Monday. Yuan developed the world's first popular and widely known hybrid rice. Hybrid rice plants can make more...
【简答题】In 2007, Angela Belcher and colleagues at MIT built a lithium-ion battery with a common type of _______ that is nonharmful to humans, using a low-cost and environmentally benign process. The batteries...
【简答题】写出下列动词的形式。 1. watch (第三人称单数) ___________ 2. have (第三人称单数) ___________ 3. number (缩写形式) ___________ 4. do not (缩写形式) ___________ 5. us (物主代词) _____...
【简答题】写出下列动词的第三人称单数形式。 1. play _______ 3. fly _______ 2. leave _______ 4. grow _______