【简答题】sp_r_d_c a. happening or seen only occasionally or in a few places
【简答题】a. happening only once or existing only in one place 孤立的
【单选题】两个相同的瓶子装满酒精溶液,一个瓶子中酒精与水的体积比是 31 ∶ ,另一个瓶子中酒精与水的体积比是 41 ∶ ,若把两瓶酒精溶液混合,则混合后的酒精和水的体积之比是多少?( )
【单选题】我国古代哪个朝代出现了有关建筑的理论作品:《营造法式》
【单选题】我国古代哪个朝代出现了有关建筑的理论作品《工程做法则例》
【单选题】Where is population growth happening?
A.
In all countries in the world.
B.
In only a few countries.
D.
Mainly in developed countries.
【单选题】What can be inferred from paragraph 3 about the happening of floods?
A.
Only with water covering a house to the rooftop can be viewed as floods.
B.
Some U. S. states are spared from the destroying power of floods.
C.
Ocean waves is the only reason to cause the disaster of floods.
D.
Floods happen more often than any other forms of natural disasters.