Human-made (synthetic) fibers used in clothes and many other consumer products are more durable than most natural plant
______ the manufacture of synthetic fibers requires toxic chemical solvents that can pollute air and water.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. fibers,
B. fibers but
C. fibers
D. fibers, but
D. fibers, but
The algaita is a double reed wind instrument from West Africa. The reed of a wind instrument is the mouthpiece ______ A
double reed contains two pieces of cane that vibrate and produce sound as air passes between them.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. where sound is made?
B. where is sound made.
C. where sound is made.
D. where is sound made?
C. where sound is made.
Photosynthesis, the mechanism by which plants use sunlight to turn carbon dioxide and water into ______ is fueled in part by
an enzyme called Photosystem II that harvests energy-giving electrons from water molecules.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. nutrients
B. nutrients and
C. nutrients,
D. nutrients—
C. nutrients,
Researchers Amit Kumar and Nicholas Epley investigated how ______ In a series of experiments conducted in 2022, they
found that people performing small acts of kindness underestimated the positive effect their actions had on others.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. do people perceive acts of kindness.
B. do people perceive acts of kindness?
C. people perceive acts of kindness?
D. people perceive acts of kindness.
D. people perceive acts of kindness.
The Mission 66 initiative, which was approved by Congress in 1956, represented a major investment in the infrastructure of
overburdened national ______ it prioritized physical improvements to the parks’ roads, utilities, employee housing, and visitor
facilities while also establishing educational programming for the public.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. parks and
B. parks
C. parks;
D. parks,
C. parks;
While one requires oxygen and one does ______ and anaerobic respiration are both forms of cellular respiration—that is, they
are processes by which cells break down glucose to use as energy.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. not aerobic
B. not. Aerobic
C. not, aerobic
D. not; aerobic
C. not, aerobic
Roughly 300 nights a year, when the cold air descending from the Andes Mountains meets the warm air rising from
Venezuela’s coastal Lake Maracaibo, the result is a spectacular lightning storm, its strikes so bright, so localized, and so
______ that it has become known as “Maracaibo’s Lighthouse.”
Which choice completes the text so that it conforms to the conventions of Standard English?
A. dependable:
B. dependable;
C. dependable
D. dependable,
C. dependable
Technologies such as microphones and inkjet printers are made using piezoelectric materials, which generate an internal
electric field when pressure is applied to them. The toxic nature of some of these materials recently led a team from the
University of Sheffield to investigate how ______
Which choice completes the text so that it conforms to the conventions of Standard English?
A. could their use be better regulated?
B. their use could be better regulated.
C. their use could be better regulated?
D. could their use be better regulated.
B. their use could be better regulated.
The haiku-like poems of Tomas Tranströmer, which present nature- and dream-influenced images in crisp, spare language,
have earned the Swedish poet praise from leading contemporary ______ them Nigerian American essayist and novelist Teju
Cole, who has written that Tranströmer’s works “contain a luminous simplicity.”
Which choice completes the text so that it conforms to the conventions of Standard English?
A. writers. Among
B. writers among
C. writers; among
D. writers, among
D. writers, among
The first computerized spreadsheet, Dan Bricklin’s VisiCalc, improved financial recordkeeping not only by providing users
with an easy means of adjusting data in spreadsheets but also by automatically updating all calculations that were
dependent on these ______ to VisiCalc’s release, changing a paper spreadsheet often required redoing the entire sheet by
hand, a process that could take days.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. adjustments prior
B. adjustments, prior
C. adjustments. Prior
D. adjustments and prior
C. adjustments. Prior