如图，∠ACB=90°，CD⊥AB，垂足为D，则CD＜CA，理由是____ ．

给带点的字选择正确的读音。

yīnɡ       yìnɡ

应该____      一应俱全____       答应____

应当 ____        照应____       应有尽有____

     Two men are walking in the park. One is Mr Brown , a worker, the other is Mr Black. Mr Brown is going to a chair. It is by the road. Mr Black is after him. Mr Brown finds Mr Black. Now Mr Black begins to walk faster(更快). Because he wants to get to the chair before Mr Black. Now Mr Black begins to walk faster because he also wants to get to the chair first. Then they both run .Mr Black runs faster than (比) Mr Brown. So he gets to the chair first and sits down on it. Mr Brown runs after Mr Black. When he gets to the chair. He sees Mr Black sitting on it. He is sorry to show a notice(通知)with the words“Wet Paint(油漆未干)”to Mr Black . Now Mr Black knows why Mr Brown is going to the chair.

个人的生存和发展是祖国存在和发展的前提。（   ）

澳门历史城区保存了澳门400多年中西文化交流的精髓，下列图片能体现这一特点的标志性建筑是（　　）