A、B分别为同一主族第三周期、第四周期的不同元素的原子，它们原子核内质子数均等于

Mr Clarke works in a middle school. He likes reading and often ____ some books from the library. He ____ to the radio every morning and reads ____ after supper. So he knows much and teaches well. His ____ worship(崇拜) him very much. Mike, Mr Clarke’s little son, is only nine. He _____ likes reading books. And he often asks his father some questions. Mr Clarke always thinks he's too ____ to understand him and chooses ____ ones to answer. Of course the boy is not satisfied with(对…满意) it. One day Mike read ____ about the electric lights (电灯) and was ____it. When his father told him to do some housework, he went on thinking of it. He asked him __10__ questions, and his father answered all. Then his father said proudly, “Fathers always know ____than sons!” The boy thought for a while and said, “____” “Oh? Why?” Mike didn’t answer and asked, ____, “Who invented the electric lights?” “____.”answered Mr Clarke. “Why didn't his father invent them, then?” Looking at his son, Mr Clarke didn't know _____ to answer!  

小题1:	A．finds B．sells C．buys D．borrows

小题2:	A．hears B．listens C．says D．reads

小题3:	A．newspapers B．letters C．stories D．messages

小题4:	A．teachers B．parents C．students D．classmates

小题5:	A．also B．never C．even D．only

小题6:	A．old B．young C．clever D．able

小题7:	A．more difficult B．the most difficult C．easy D．the easiest

小题8:	A．everything B．nothing C．something D．anything

小题9:	A．worried about B．interested in C．afraid of D．angry with

小题10:

A．few B．little C．a few D．a little

小题11:

A．more B．most C．less D．least

小题12:

A．I think so B．I don’t know C．I agree D．I don’t think so

小题13:

A．instead B．carefully C．quickly D．brightly

小题14:

A．Thomas Brown B．Allan Smith C．Thomas Edison D．Ron Jenkins

小题15:

A．when B．what C．where D．Which