【单选题】中国旅游日、世界旅游日分别是哪一天( )
【判断题】转基因技术是现代农业生物技术的核心组成部分。
【单选题】It can be inferred from the last paragraph that______.
A.
it may not be wise to keep elephants in zoos
B.
zoo -born elephants should be looked after with more care
C.
zoos should keep more animals except elephants
D.
elephants are no longer endangered species
【单选题】患者男,45岁,夜间阵发性呼吸困难6个月。查体:口唇轻度发绀,心尖区触及舒张期震颤,叩诊心界呈梨形,心尖区闻及低调、隆隆样舒张中晚期杂音。其诊断是
【单选题】旅行社同时推出观光旅游、特殊兴趣旅游、探险旅游、豪华团旅游、经济团旅游等产品及其营销组合,以满足不同细分市场的需要,此 种营销策略属于( )
【判断题】直通车规定一个产品最多能设置200个关键词。
【单选题】When Elephants Paint is a book ______.
A.
on the history of arts
B.
about the painting elephants in Asia
C.
explaining how to teach elephants to paint
D.
chiefly theorizing about elephant art
【单选题】男,45岁,夜间阵发性呼吸困难6个月,查体:口唇轻度发绀,心尖区触及舒张期震颤,叩诊心界呈梨形,心尖区闻及舒张中晚期隆隆样杂音,请问该患者发生了什么?