【单选题】听力原文:Man: In the late 1850s Chinese laborers flooded into American and it was not until early 1860's that many more Chinese arrived in California. Was there any improvement for Chinese's living condit...
【单选题】Flats were almost unknown in Britain until the 1850s when they were developed, along with other industrial dwellings, for the laboring classes. These vast blocks were plainly a convenient means of eas...
A.
they were principally built for those families with several servants
B.
people were not conscious of the crowded housing of the less well-to-do
C.
there was increasing concern over accommodation for the poor
D.
people became conscious of the social needs of the rural population
【简答题】The theory of evolution by natural selection was put forward in the 1850s independently by two men. One was Charles Darwin; the other was Alfred Russel Wallace. Both men had some scientific background...
【单选题】In the early 1850s, with the westward movement, the slavery became a serious political issue endangering the unity of the country because ________.
A.
whether or not slavery would expand into the future states formed as a result of the westward movement would affect the balance of power in the Senate
B.
the South insisted that slavery should be allowed to spread into all new territories
C.
the North refused to let slavery spread into new territories