MissRichardswasateacherataschoolforboysandgirls.She1 chemistryandphysicsfromthelowesttothehighestclassesinthe2 Sometimesthenewclasses3 rapidlybutsometimestheywerevery4 andthenMissRichardshadto5 thingsmanytimes.
Oneyearthefirstclasshadbeenstudyingchemistryforseveral6 whenMissRichardssuddenlyasked"Whatiswater?Whoknows?7 up?"
Therewassilence(沉默)forafewsecondsandMissRichardsfeltsad(难过)，butthenoneboy8 hishand.
"YesDick?"saidMissRichardsencouragingly(鼓励地).Hewasnotoneofthebrightestchildrenintheclasssoshewas9 thathecouldanswer.
"Waterisaliquidwhichhasno10 untilyouwashyourhandsinitMiss.Thenitturnsblack"theboyrepliedwithgreatconfidence(信心).
( )1.A.teaches B.teaching C.taught D.teach
( )2.A.schooling B.school C.schools D.home
( )3.A.learned B.learning C.hadbeenlearned D.werelearned
( )4A.slow B.beingslow C.slowly D.slowest
( )5.A.repeated B.repeating C.do D.repeat
( )6.A.years B.minutes C.weeks D.seconds
( )7.A.Put B.Hands C.Get D.Look
( )8.A.lows B.ride C.raised D.put
( )9.A.sad B.glad C.angry D.hungry
( )10.A.color B.colorful C.colorless D.withcolor
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