I have no idea how it          that the man met with trouble again.

       A．came about             B．came out       

       C．came up           D．came across

The city was _____ to me, and I didn't know where to go.

   A. interesting           B. large                        C. strange                     D. exciting

The clock _____ and we realized it was two o’clock.

   A. struck                 B. hit                           C. turned               D. rang

I’m sorry I can’t lend any money to you because I have ______ my purse at home.

   A. left                     B. forgotten                  C. lost                          D. put

There are 5 _______ in the passage about nanometer(纳米)technology we have just read. Please tell me the general meaning of the first one.

   A. persons               B. paragraphs            C. articles                   D. units

Our cadres, whether high or low in their official rank, are the people's public servant and _____workers.

   A. common                    B. ordinary                   C. usual                        D. normal

The international police has come into existence and they were ____ the key to global security.

A. thus                  B. for                     C. or                     D. otherwise

Whenever a big company ______ a small one, the product almost always gets worse.

   A. gets on with.        B. cuts down           C. takes over          D. puts up with

And video cameras can be used to_______ people’s actions at home.

A. keep                B. make             C. record              D. watch

Waste things can, _______ should, be treated properly.