39．A．from B．between C．among D．through
38．A．dangerous B．funny C．easy D．hard
37．A．helped B．filled C．proved D．named
36．A．rapid B．main C．famous D．modem
Buses ale still the ___36___ public transportation in all large cities of China．There are many routes（路线）of buses in all large cities．The buses are always ___37___ with numbers such as Route 1，Route 27 and Route 320．These numbers make it ___38___ for passengers to find out the buses they want to take．Buses in cities often run ___39___ 5：00 in the morning and 23：00 at night each day．There are often 5 to 10 minutes between every two buses．
It is also very convenient（方便的）to ___40___ in all large Chinese cities．Taxis are running around the cities and you Can always find them around big hotels，railway stations and airports．
If you want to go somewhere ___41___，you can take trains or planes．In the past，it was not very ___42___ to take a train in China for the trains were slow and crowded．Today，things have changed．The Chinese government has been building new railways and ___43___ the running speed of trains．As for planes，now there're many airline companies（航空公司）in China．Many cities have built highways from the ___44___ to the city centre．That greatly ___45___ the traveling time for passengers．
34．Don't _________ the animals in the zoo．They have their own food．
A．point to B．play with C．watch D．feed
33．I'm writing a report on _________．It's about how to grow wheat．
A．gardening B．agriculture C．fishing D．education
32．This coat is warm enough to _________ you _________ the cold．
A．put；into B．stop；from C．protect；from D．help；with
31．―What's _________ of the new camera?
―It's smaller and lighter．Also，it can take more photos．
A．feature B．color C．problem D．cost