单项选择题

The amount of home assignments normally diminishes towards the end of the semester.

A. decreases
B. improves
C. mounts
D. fluctuates
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单项选择题
Without these preventive measures, television picture would become unclear and fragmented.
A. fragile
B. invisible
C. discontinued
D. vulgar
单项选择题
A. Organic farming can reduce soil erosion. B. Organic crops produce lower yields. C. Organically grown food tastes strange. D. Organic farming is better for the environment,
A. Organic farming can reduce soil erosion.
B. Organic crops produce lower yields.
C. Organically grown food tastes strange.
D. Organic farming is better for the environment,
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