What do the two instruments mentioned in the second paragraph （Line 5） refer to?

A．The astronomical telescope and the wave-front senso

B．The aluminum mirror and the laser bea

C．The active mirror and the contact len

D．The aluminum mirror and the wave-front senso

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1 It has been found that vitamin E ________.

A．should be taken by patients regularly and persistently

B．can effectively reduce the recurrence of heart disease

C．has a preventive but not curative effect on heart disease

D．should be given to patients with heart disease as early as possible

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2 Individualized contact lenses （Line 7, Para. 2） are lenses designed（　　）.

A．to work like an astronomical telescope

B．to suit the wearer’s specific needs

C．to process extremely accurate data

D．to test the wearer’s eyesight

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3 According to Bille, with the new lenses the wearer’s vision（　　）.

A．will be far better at night than in the daytime

B．may be broadened about 15 times than without them

C．can be better improved in the daytime than at night

D．will be sharper by a much greater degree at night than in the daytime

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