二尖瓣狭窄时提示肺动脉高压的体征是（）。 A.开瓣音 B.心尖部舒张期杂音出现得晚

Please look at the Flight Timetable and choose the right answers.

Flight No. Departure  Arrival   From    To        Stop CA907   07:45      12:10   Beijing  Moscow   Chengdu CA981  01:58      18:35   Beijing  New York  Shanghai CA158   10:20      23:10   Beijing  London    Chengdu CA149   11:35      22:10   Beijing  Sydney    Hong Kong CA923   12:35      17:10   Beijing  Moscow   / CA167   13:15      02:40   Beijing  Paris      Moscow CA147   15:55      10:15   Beijing  Sydney    Guangzhou CA949   17:25      07:35   Beijing  Paris      Shanghai CA173   19:20      01:50   Beijing  Moscow   Urumqi CA937   21:25      08:10   Beijing  London    Hong Kong

(departure=leaving)
小题1:You’ll go to Australia. You can only take       
when you reach Beijing Airport at eleven forty.

A．CA923

B．CA149

C．CA147

D．CA167

小题2:If you spend fourteen hours and ten minutes going to France, you must stay in        on the way.

A．Hong Kong

B．Shanghai

C．Moscow

D．Chengdu

小题3:It will take you    to reach England if you stop in Hong Kong.

A．nine hours and twenty	B．ten hours and thirty-five
C．twelve hours and fifty	D．ten hours and forty-five

小题4:You may         in Beijing if you want to go to America.

A．take one plane	B．take two planes
C．take three plane	D．not take any planes

小题5:How many planes may you take in Beijing if you want to go to Australia?

A．One

B．Two

C．Three

D．Four.