5.Who first invented_______compass in China?

A.the B.a C.不填D.one

4.Tom seems to be as tall as Dick;in fact,Tom is_______taller of the two.

A.a B.the C.不填D.more

3.It will be warm because_______mind has changed to_______south.

A.不填;the B.a;a C.the;不填D.the;the

2.She is as clear_______girl as you can wish to meet.

A.a B.the C.one D.不填

1.As_______mayor of this city,it is my duty to welcome you.

A.a B.the C.不填D.an

30.Though he failed in the experiment,_______he didn’t give up.

A.but B.and yet C.yet D.still

29.When you drive home,you can’t be_______careful.

A.very B.too C.so D.only

28.I don’t often get sick,but_______I do catch cold.

A.here and there B.again and again

C.now and then D.over and over

27._______,the medical team is made up of twelve doctors.

　pletely D.Wholly

26.-Do you regret paying five hundred dollars for the painting? 　 -No,I would gladly have paid_______for it.

　A.twice so much B.twice as much C.as much twice D.so much twice