The logic of scientific development is (such) that (separates) groups of men working (on) the same problem in (far-scattered) laboratories are likely to arrive at the same answer at the same time.

A:such B:separates C:on D:far-scattered

(As far as) I am concerned, his politics (are) rather conservative (compared) with (politicians).

A:As far as B:are C:compared D:politicians

The new instrument is (far) superior (than) the old (one) we bought three years (ago).

A:far B:than C:one D:ago

When things far away seem indistinct, one is probably ______.

A:near-sighted B:far-sighted C:astigmatic D:suffering from cataracts

I usually walk ______ the river bank over there, but today I feel tired and won't walk far.

A:as long as, so B:as far as, that C:as often as, such D:as soon as, very

When things far away seem indistinct, one is probably ______.

A:near-sighted B:far-sighted C:astigmatic D:suffering front cataracts

.So far we have done a lot to build a lowcarbon economy,but it is ideal.We have to work still harder.

A:next to B:far from C:out of D:due to

.So far we have done a lot to build a lowcarbon economy,but it is ideal.We have to work still harder.

A:next to B:far from C:out of D:due to