使用弹簧测力计时，下列几种说法错误的是（　　）

从右栏中选出与左栏相应的答句。

①Is this your school?____                                                            A.There are three.

②How is your brother, Tom?____                                                B.I'm a student.

③Is there an art room in your school?____                                 C. She's Jack's sister.

④What are you?____                                                                    D. Yes, it is.

⑤How old is he?____                                                                    E. No, there aren't.

⑥Is Mrs. Li a teacher?____                                                            F. Thank you very much.

⑦Are there five boxes on the desk?____                                    G. He's fine.

⑧How many rubbers are there in th edesk?____                       H. Yes, there is.

⑨Sit down, please.____                                                                I. No, she isn't.

⑩Who's she?____                                                                       J. He's twelve.

冬至时是一年中太阳相对于地球位置最低的时刻，只要此时能采到阳光，一年四季就均能受到阳光照射．此时竖一根a米长的竹杆，其影长为b米，某单位计划想建m米高的南北两幢宿舍楼（如图所示）．当两幢楼相距多少米时，后楼的采光一年四季不受影响？（　　）.

如图，AB是半圆O的直径，点C在半圆上，过点C的切线交BA的延长线于点D，CD=CB，CE∥AB交半圆于点E．

（1）求∠D的度数；

（2）求证：以点C，O，B，E为顶点的四边形是菱形．

关于印度与东南亚，下列说法正确的是（　　）