13. ______, you must do your every best to make the party __________.
| A．In a word, success | B．In a word, a success |
| C．In one word, success | D．In words, a success |
.
No．50 High School is as new as No．48 High School．____, it is more beautiful．
| A．If anything | B．If something | C．If necessary | D．If so |
.
We’ve published large quantities of books This year _______we’ve published three
million copies．
| A．only | B．just | C．alone | D．simply |
.
I’ll go to America to strengthen my English _______it isn’t too expensive.
| A．except | B．provided | C．assumed | D．unless |
.
These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．
| A．would have been unthinkable | B．would not be unthinkable |
| C．would be unthinkable | D．would not have been unthinkable |
.
—How about going out for a picnic on Sunday morning?
—Hmm．___．The weather is very good these days．
| A．Yes, why not | B．Well, no way | C．Oh, never mind | D．Sure, no matter |