单项选择题

A．The Positive Impact of ChemistryB．The Harmful Effects……

The proper title for this passage should be ______.

A．The Positive Impact of Chemistry
B．The Harmful Effects of Chemicals
C．Progress in Chemistry
D．Chemistry and Society

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单项选择题According to this passage, chemistry ______.

A．produces more harmful effects than beneficial ones
B．produces no more harmful effects than beneficial ones
C．is no longer unanimously regarded as the science of the future
D．is not worth pursuing persistently

单项选择题According to the passage, Loyalism during the American Revolutionary War served the function of ______.

A．eliminating the disputes that existed among those colonists who supported the rebel cause
B．drawing upper, as opposed to lower, socioeconomic classes away from the rebel cause
C．tolerating the kinds of socioeconomic discontent that were not allowed to exist on the rebel side
D．absorbing members of socioeconomic groups on the rebel side who felt themselves in contention with members of other socioeconomic groups

单项选择题The author considers the contentions made by the recent historians discussed in the ______.passage to be ______.

A．potentially verifiable
B．partially justified
C．logically contradictory
D．ingenious but flawed

单项选择题According to the passage, which of the following is a true statement about sectional conflicts in America between 1763 and 1789

A．There conflicts were instigated by eastern interests against western settlers.
B．These conflicts were the most serious kind of conflict in America.
C．The conflicts eventually led to openly expressed class antagonism.
D．These conflicts contained an element of class hostility.

单项选择题Readery are said to bark at a text when ______.

A．they read too loudly
B．there are too many repetitive words
C．they are discouraged from using their imagination
D．they have difficulty assessing its meaning