被认为乃牙固有益菌的为（） A.变形链球菌 B.血链球菌 C.消化链球菌 D.乳杆菌

完形填空。 （共10小题，每小题1分，满分10分）
阅读下面短文,从短文后各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
One day the boss asks Tom to meet his friend Mr. Green in London. But it is his __41__ time to come to London. He doesn’t know the __42__ to Mr. Green’s home He thinks he can ask people for help.When he __43__ in London, He gets off the
bus.There are __44__ people in the street. He looks around and stops a __45__ and tells her where he wants to go. The woman is very helpful. __46__ her help, he finds Mr. Green’s home. Two weeks __47__, Tom needs to visit Mr. Green again. But he can’t __48__ where his home is. He stops a person to ask the way. It’s the same woman. The woman is very__49__. She says, “Are you__50__ looking for the place?

小题1:	A．last B．first C．second D．third

小题2:	A．name B．way C．city D．man

小题3:	A．comes B．gets C．arrives D．goes

小题4:	A．many B．much C．a little D．a lot

小题5:	A．man B．woman C．boy D．girl

小题6:	A．With B．Without C．Under D．By

小题7:	A．after B．later C．behind D．late

小题8:	A．remember B．forget C．know D．tell

小题9:	A．sad B．glad C．surprised D．sorry

小题10:

A．never B．still C．just D．again