【单选题】教师在“生态系统的能量流动”这一内容的教学中,运用教材中提供的资料导入。“假设你像小说里的鲁滨孙那样,流落到一个荒岛上,那里除了有能饮用的水外,几乎没有任何事物。你随身的食物只有一只老母鸡、玉米。你认为以下哪种生存策略能让你维持更长时间来等待救援:(1) 先吃鸡,再吃玉米; (2) 先吃玉米,同时用一部分玉米喂鸡,吃鸡下的蛋,最后吃鸡。”该导入属于( )
【简答题】口算 yy-3.25= y÷ y yy ÷ y yyy = y 3 ÷3= y.v÷y.5= 5 i ×y.v= 5 6 ÷y 2 3 = y.2+ 4 5 = y÷4 4 5 = y.y-y.yy= 5.v×i+5.v= 3 y 2 ×6= 2y÷ 3 7 =
【判断题】佛教在我国的发展历史:东汉初期由印度经西域传来,两晋、南北朝时得到大发展,建造了大量的寺院、石窟和佛塔。隋、唐、五代至宋,是中国佛教的另一大发展时期。在佛经学说方面,出现了许多宗派,佛学思想的研究达到了空前的繁荣。
【单选题】Little __________that I would one day take part in a war that would last for six years.
【单选题】Technology has become an important part of education, particularly in expanding access to education. Which of the following cannot explain the underlined part of the sentence?
A.
increasing opportunities
B.
providing more chances
D.
offering more channels
【单选题】Technology has become an important part of education, particularly in expanding access to education.
A.
increasing opportunities
B.
providing more chances
D.
offering more channels
【简答题】设离散符号集U,X,Y,V构成马氏链,则H(2X)______H(X);H(X|Y)______H(X|YV);I(X;V|Y)______H(Y);I(X;Y)______I(U;V).(从符号集{≤,≥,>,<,=}中选择)
【单选题】Spotify is expanding its services to which part of the world?