MCQOPTIONS
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| 1. |
1: A connection had long been suspected P: since both were at their worst in the Q: same regions and seasons, but the nature R: between the abundance of mosquitoes S: and the occurrence of mosquitoes 6: of this connection had not been understood. |
| A. | RQSP |
| B. | RSQP |
| C. | RSPQ |
| D. | PQRS |
| Answer» D. PQRS | |