【C9】A．speeds upB．acceleratesC．slows downD．goes down

Once a scavenging fire is detected, the engine （)A.will be speeded upB.should be slowed d

The speed at which a storm centre moves is the （).A.speed of movementB.speed of advanceC.s

It’s the training that ______ your speed, not the trainers.A: improvesB: promisesC: tea

To speed______your entry, please bring your Admission Card with you.A．upB．onC．outD．down

【C9】A．called upB．returned toC．visitedD．left

You will be given a ticket if you __________the speed limit.A.proceedB.exceed###S