如图1－23，L1，L2分别为凸透镜和凹透镜．前面放一小物，移动屏幕到L2后20cm的S1处接收到像．现将凹透镜L2撤去，将

A、The forbidden city is a good place in Beijing

B、The forbidden city is a true gem for Beijing

C、The forbidden city is a jewelry for Beijing

D、The forbidden city is a true ruby for Beijing

— Which city has _________population, Beijing, Guiyang or Nanchang？

— Beijing, of course.

A、the largest

B、the smallest

C、the most

A、No.10, Bei Jing Street, Bin Hai City

B、No.10, BeiJing Street, BinHai City

C、No.10, Beijing Street, Binhai City

D、No.10, beijing Street, binhai City

This news report mainly talks about ______.

A．how Beijing is becoming a 21st-century city

B．how many projects are being dealt with to improve the traffic of Beijing

C．how Beijing is being built into a first-class Olympic host city

D．the use of the 20 billion dollars

Beijing is _____ that we can hardly visit all the beautiful places in two or three days.

A.such a large city

B.such large a city

C.so a large city

D.a such large city

A．Well, I"m not sure I quite agree.

B．Beijing is really a quite modern city, isn"t it？

C．Excuse me, which cities are you comparing Beijing with？

D．May I have your attention, please. Beijing is a big city, too.

A、any other city

B、any other cities

C、any city

D、any cities