__blackonewithalongtail?A.an,The B.an,An C.the,The D.the,An解析:考查冠词的用法。而根据题意我们可以看出,问答中的动物都是表示特指,答案是C。41.---WhathappenedtoTom?---Hewascrossingthestreet____amotorbikehithimfrombehind. A.while B.when C.until D.because解析:while表示“在......时候”时不能与瞬间动词连用。hit是撞,瞬间的动作。when“当....时候”可以与瞬间动词连用。until直到....because因为,后面两个与题目意思不符合,答案为B.42.---Dad,what‘sthesealike?---Well,it’slargeandfullofwater.Itcoversabout_____oftheearth.A.onethird B.threequarter C.three-fourth D.threequarters解析:我们知道海占了地球的大部分。A是三分之一,与题目不符合。quarter是四分之一,在分子大于一时,分母序数词要用复数,答案为D。43.---Goandaskthewaiterhowmuch_____.---Don'tworry.Ithasbeen_____.A.doesthemealcost,paidfor B.themealcosts,paid C.themealspends,paid D.themealcosts,paidfor解析:首先宾语从句用陈述句语序,A可以排除。cost表示某物花多少钱,spend花费时间或金钱,一般人做主语。pay表示付钱,payfor为....支付了多少钱。答案是B。44.---Doesthechildneedanyhelp?