题文
Extra warmth from sunlight can put an additional ________on the air-conditioning system.
| A．weight |
| B．anxiety |
| C．load |
| D．tiredness |
推荐试卷
Extra warmth from sunlight can put an additional ________on the air-conditioning system.
| A．weight |
| B．anxiety |
| C．load |
| D．tiredness |
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