【单选题】According to the passage, which of the following statements can not be considered as the reason of the 'smelly' house of the poor?
A.
The outdoor privy is smelly.
B.
The refrigerator has gone out of order.
C.
The housewife cannot afford the time to clean the mattress.
D.
It is costy to bury rotting garbage.
【单选题】世界上最早养蚕和织造丝绸的国家是( )。
【判断题】中国是世界上最早饲养家蚕和织造丝绸的国家,宋元时织造工艺达到历史最高水平。
【单选题】中国是世界上最早饲养家蚕和织造丝绸的国家,因而曾被古代世界各国称为( ),意思是“丝国”。
【单选题】( )是将总体各单位编上序号并将号码写在外形相同的纸片上掺和均匀后,再从中随机抽取,被抽中的号码所代表的单位就是随机样本,直到抽够预先规定的样本数目为止。
【单选题】( )是世界上最早养蚕和织造丝绸的国家。
【单选题】_____ has assumed a place among the great documents of human freedom.
A.
The Emancipation Proclamation
C.
The Declaration of Independence
【判断题】轴承是用来支承轴及轴上零件,以减少轴与支承面间的摩擦和磨损。
【单选题】According to the passage, ______ will be the victim of the tax-cut.