It is well known that good lubrication

1、This printer is of good quality. If it

This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.A would B should C could D might

2、Cycling is a good exercise.（）, it does

Cycling is a good exercise.（）, it doesnt pollute the air.AThereforeBHoweverCMoreoverDBut

3、It is during （） that work energy is be

It is during （） that work energy is being put into the engine; during the other 3 strokes of the piston, the engine is having to do the work.Athe suction strokeBthe compression strokeCthe expansion strokeDthe exhaust stroke

4、It was well known that Thomas Edison（）

It was well known that Thomas Edison（）the electric lamp.AinventedBdiscoveredCfoundDdeveloped

5、It is good practice to use long towlin

It is good practice to use long towlines for ocean tows because the（）.Awear on the towline is equalizedBweight of the towline increases the towing forceCdip in the towline absorbs shock loadsDdanger of overriding is reduced

6、It is believed that if a book is（）,it

It is believed that if a book is（）,it will surely（）the reader.Ainterested… interestBinteresting… be interestedCinterested… be interestingDinteresting… interest