多选题 Because free hydrogen does not exist in nature, it cannot be ______ a primary energy source, as coal or oil can.
borne in mind
taken into account
concerned with
considered
remarked upon
thought of as
多选题 The young clerk was quickly promoted when his employers saw how ______ he was.
indigent
assiduous
autocratic
industrious
intractable
self-serving
单选题 The primary topic of the passage is which of the following?
The origin of bioluminescence in plankton predators
The disadvantages of bioluminescence in microorganisms
The varieties of marine bioluminescent life forms
Symbiotic relationships between predators and their prey
Hypotheses on the causes of bioluminescence in plankton
单选题 The raised artificial islands known as crannogs, built in medieval times in Ireland and Scotland, ______ consist of post palisades sunk into the lake.
currently
typically
cursorily
imprudently
especially
多选题 Consider each of the choices separately and select all that apply. If a father of four children carries the Huntington’s mutation, which of these is true?
Two of the four children may inherit the mutation.
Two of the four children may have the disease.
Two of the four children may end up disease free.
单选题 How might the organization of the passage be described?
Paragraph one introduces the topic; paragraphs two and three present examples in support.
Paragraph one introduces the topic; paragraphs two and three present reasons in support.
Paragraphs one and two present an argument; paragraph three summarizes the argument.
Paragraphs one and two introduce the topic; paragraph three offers alternatives.
Paragraph one introduces a cause; paragraphs two and three provide effects in order.
多选题 For questions 2 and 3, consider each of the choices separately and select all that apply. Which fact or facts about purple loosestrife add to its power of endurance?
It has a great ability to cross-pollinate.
It easily adapts to environmental change.
It has spiky stems and flowers.
多选题 The distinctive qualities of African music were not appreciated or even ______ by Westerners until fairly recently.
deprecated
discerned
ignored
revered
remarked on
neglected