本周要学习的单元是？ A: Unit 6 B: Unit 7 C: Unit 8 D: Unit 9

Unit 9 Part A______ ______ ______ ______ ______ ______ ______ ______ ______ ______

Unit9-The Health Education Council is the central agency for __________information about disease prevention.

Unit 9 Previewing Vocabulary Read the following sentences and then use context to match the underlined words and phrases with their definitions.

中国大学MOOC: The speech simultaneously interpreted in Unit 9 was delivered by______________, Prime Minister of New Zealand.

old to new unit 9(副本) Match the old expressions you learned before with the new expressions you learned in the text.

A unit price consists of four parts: currency unit, unit price figure, measuring unit and price terms.

Four people each have a different willingness to pay for one unit of a good: George will pay $15, Glen will pay $12, Tom will pay $10, and Peter will pay $8. If price is equal to $9 per unit then the quantity demanded in the market will be ________ and the consumer surplus for this unit will be ________. A: 3; $10 B: 3; $37 C: 3; $36 D: 4; $8

_____ this, the unit will not operate. A: Because of this,<br/>the unit will not operate. B: As a consequence, the unit will not operate.

辅助动力装置 A: aircraft power unit B: aid unit C: auxiliary power unit D: assessment of performance unit