“开元初，上留心理道，革去弊讹，不六七年间，天下大理。”“天下大理”的局面被誉为

三角形的三个顶点A（1，1），B（4，0），C（3，2），求BC边上的高所在直线的方程。

不含通假字的一句是（ ）

A 日影反照，室始洞然  B 某所，而母立于兹  C 吾党菁华付之一炬  D 四十五里，道皆砌石为磴

男性，18岁，幼年起反复发生喘息，多在夏秋季发作。3小时前因进入刚装饰过的房间发生严重呼吸困难，遂来急诊，呼吸急促，大汗，不能平卧。(以下6题共用题干)

为了进一步明确上述推测中哪一种正确应当进行的检查是（ ）。

A．心电图

B．超声心动图

C．放射性核素扫描

D．胸透或拍摄胸片

E．胸部CT

从古代的“谋士”、“军师”、“参谋”到现代的“智囊”、“顾问”，各种名称都说明信息（）是高智力的活动。

A.咨询服务

B.检索服务

C.评价服务

D.分析服务

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

Greg’s long-distance telephone plan charges him $0.50 for the first 4 minutes of a call, and $0.07 per minute for each subsequent minute. Greg made a call to Carrie for x minutes, where x is an integer. How many minutes long was Greg’s call ？（）
(1) The last 7 minutes of Greg’s call cost $0.22 less than the first 7 minutes of the call.
(2) The call did not cost more than $1.05.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.