2/3/26
A new type of vaccine, which could become available in the United States over the next few years, is made by growing viruses in cultures of animal cells rather than with chicken eggs.
A. NO CHANGE
B. in
C. to
D. from
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2/2/26
A factory needs robots to perform repetitive tasks at high volume 24 hours a day. The most common robots are large industrial machines dedicated to specific processes that run independently and can be more than six feet tall and 30 feet long.
A. NO CHANGE
B. processes, which run independently and can be
C. processes. These machines run independently and can be
D. processes; running independently and being
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2/1/26
Sleep-inducing substances may come from the process of making new connections between neurons. Sleep researcher, Chiara Cirelli, suggests that since making these connections, or synapses, is what our brains do when we are awake, maybe what they do during sleep is scale back the unimportant ones, removing the memories or images that don’t fit with the others, or don’t need to be used to make sense of the world.
A. NO CHANGE
B. researcher, Chiara Cirelli
C. researcher Chiara Cirelli,
D. researcher Chiara Cirelli
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