生态学按生物栖息场所（也称生境类型）来分，可分为（  ）和水域生态学。

村民甲（19周岁）路过村民乙家门口时，用一块石头向乙家所养且卧在乙家门口的狗打去，该狗立即扑向甲，甲因跑得快未被狗咬，狗咬伤了甲旁边的行人丙。丙因躲避，将...

人的能力有“早熟”和“大器晚成”的表现，这反映了能力哪一方面的差异（）。A.能力类型差异 B.能力发展速度的差异 C.能力发展水平的差异 D.能力遗传素质的差异

A.a>1 B.a>2 C.1A.a>1  B.a>2  C.1

标准状况下，物质的量相同的甲烷和氮气，一定具有相同的（   ）A.质量 B.体积 C.质子数 D.原子数

材料"世祖皇帝建元中统以来，始末取故老诸儒之言，考求前代之典，立朝廷而建官府，辅相者曰‘中书省',本兵者曰“枢密院”，主弹纠者曰‘御史台'…”...

" ... She was married to an officer in India , long ago India； and she had a...A

[阅读理解]    In choosing a friend, one should be very careful. A good friend c...

[ 完型填空]    Last night, a fire broke out in Ann's house in Manchester.   ...

[ 阅读理解]    Today the official language of the United Sates and most of Cana...

[词汇与结构]—Nice to see you. I ______you for a long time.

Paper is one of the most important products ever invented by man. Wide spread...

Places to stay in Britain are as varied as the places you visit. Whatever you...

Three men traveling on a train began a conversation about the world's greate...

Today the official language of the United Sates and most of Canada is English...

Britain and France are separated by the English Channel, a body of water that...

Mr. Tom Forester lived by himself a long way from town. He hardly ever left h...

Morgan Rees has always been a good businessman. He used to own three petrol s...

No one is glad to hear that his body has to be cut open by a surgeon（外科医生） an...

There was once many sheiks (阿拉伯的酋长）who wanted to marry Queen Maura, for she w...