A. first a high-pressure system, and then a low-pressure system
The sunny weather during the week is typically associated with high-pressure systems, while rain is often associated with low-pressure systems. So, it is likely that a high-pressure system will be followed by a low-pressure system as the forecast predicts.
Use the scenario to answer the question.
A weather forecast predicts that a sunny week will be followed by a rainy weekend.
Which pressure systems are likely to occur?
A. first a high-pressure system, and then a low-pressure system
B. first a high-pressure system, and then another high-pressure system
C. first a low-pressure system, and then a high-pressure system
D. first a low-pressure system, and then another low-pressure system
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